<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e26f4-3873-7a68-9a08-a65a9dffc95a,g:f8139094-c9df-476f-8f86-5b6cd52ed534-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/RiskReturn" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#RiskReturn"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/RiskReturn" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_S000104631Member" xlink:href="ck0001771146-20260518.xsd#ck0001771146_S000104631Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityDomain" xlink:to="loc_ck0001771146_S000104631Member" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/FeesAndExpenses" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#FeesAndExpenses"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/FeesAndExpenses" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_S000104631Member" xlink:href="ck0001771146-20260518.xsd#ck0001771146_S000104631Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityDomain" xlink:to="loc_ck0001771146_S000104631Member" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/OperatingExpensesData" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#OperatingExpensesData"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/OperatingExpensesData" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_oef_ShareClassDomain" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_C000275263Member" xlink:href="ck0001771146-20260518.xsd#ck0001771146_C000275263Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_oef_ShareClassDomain" xlink:to="loc_ck0001771146_C000275263Member" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_S000104631Member" xlink:href="ck0001771146-20260518.xsd#ck0001771146_S000104631Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityDomain" xlink:to="loc_ck0001771146_S000104631Member" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/ExpenseExample" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ExpenseExample"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/ExpenseExample" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_oef_ShareClassDomain" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_C000275263Member" xlink:href="ck0001771146-20260518.xsd#ck0001771146_C000275263Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_oef_ShareClassDomain" xlink:to="loc_ck0001771146_C000275263Member" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_S000104631Member" xlink:href="ck0001771146-20260518.xsd#ck0001771146_S000104631Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityDomain" xlink:to="loc_ck0001771146_S000104631Member" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/InvestmentStrategy" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#InvestmentStrategy"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/InvestmentStrategy" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_S000104631Member" xlink:href="ck0001771146-20260518.xsd#ck0001771146_S000104631Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityDomain" xlink:to="loc_ck0001771146_S000104631Member" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/InvestmentRisks" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#InvestmentRisks"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/InvestmentRisks" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_oef_AllRisksMember" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AllRisksMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_oef_RiskLoseMoneyMember" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_RiskLoseMoneyMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_oef_RiskLoseMoneyMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
    <link:loc xlink:type="locator" xlink:label="loc_oef_RiskNotInsuredDepositoryInstitutionMember" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_RiskNotInsuredDepositoryInstitutionMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_oef_RiskNotInsuredDepositoryInstitutionMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_ETFStructureRiskMember" xlink:href="ck0001771146-20260518.xsd#ck0001771146_ETFStructureRiskMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001771146_ETFStructureRiskMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_ETFStructureRiskTradingIssuesRiskMember" xlink:href="ck0001771146-20260518.xsd#ck0001771146_ETFStructureRiskTradingIssuesRiskMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001771146_ETFStructureRiskTradingIssuesRiskMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_ETFStructureRiskMarketPriceVarianceRiskMember" xlink:href="ck0001771146-20260518.xsd#ck0001771146_ETFStructureRiskMarketPriceVarianceRiskMember"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001771146_ETFStructureRiskMarketPriceVarianceRiskMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_ETFStructureRiskAuthorizedParticipantsAPsMarketMakersAndLiquidityProvidersRiskMember" xlink:href="ck0001771146-20260518.xsd#ck0001771146_ETFStructureRiskAuthorizedParticipantsAPsMarketMakersAndLiquidityProvidersRiskMember"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001771146_ETFStructureRiskAuthorizedParticipantsAPsMarketMakersAndLiquidityProvidersRiskMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_ETFStructureRiskCostsOfBuyingOrSellingSharesOfAnETFMember" xlink:href="ck0001771146-20260518.xsd#ck0001771146_ETFStructureRiskCostsOfBuyingOrSellingSharesOfAnETFMember"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001771146_ETFStructureRiskCostsOfBuyingOrSellingSharesOfAnETFMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_S000104631Member" xlink:href="ck0001771146-20260518.xsd#ck0001771146_S000104631Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityDomain" xlink:to="loc_ck0001771146_S000104631Member" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/PerformanceManagement" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#PerformanceManagement"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/PerformanceManagement" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001771146_S000104631Member" xlink:href="ck0001771146-20260518.xsd#ck0001771146_S000104631Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityDomain" xlink:to="loc_ck0001771146_S000104631Member" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/label"/>
  </link:presentationLink>
</link:linkbase>
