can i build my android app for both arm64 and x86_64 system images?

i can make file .apk for my tablet(arm64) but it do not run on any of my smart phones(x86_64).i want my app to be able to run on both platforms.some topic said that i need check this box:
image
“support x86_64 [aka x64]” but it sad that “this requires github source”.I tried following some instructions on the homepage to get “github source”.i linked to my github account but when i click on the link to unreal engine github page ,there is nothing there:


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-What step did I miss to get “github source”(I’m new and I can’t even imagine what it is).
-if it’s just a download and then I can check the box “support x86_64 [aka x64]” then why is unreal engine asking for github source for x86_64, why they just leave only arm64 there?

just add a win64 build in build settings and build an exe file.
compile and package for windows.

sorry for my english but i mean x86_84 version for android and not version for window.my apk file can only run on phone whose system images is arm64.it cant run on any of my phones have x86_64 system images

There is Arm7 in build
to build an arm64 you must use 4.27 possibly.
I build for the quest (android) and for win 64.