To use microG with ReVanced-patched apps:

• Download and install the latest ReVanced Manager from here:
  https://revanced.app/download
• Download and install the latest ReVanced fork of GmsCore APK from here:
  https://github.com/ReVanced/GmsCore/releases
• Open MicroG Settings from the App Drawer:
  • Disable “Google device registration” or “Authenticate with device registration”.
  • In “Google Accounts”, enable “Allow apps to find accounts”
• Open ReVanced Manager:
  • Select the recommended YouTube APK
    (You may need to hunt for it online.)
  • Ensure the GmsCore Support patch is checked
  • Run the patcher.
  • Once complete, install the YouTube ReVanced APK.
• Open the newly installed YouTube Revanced app, tap the profile avatar and Sign in using your Google account through the microG prompt.