Question: I tried about a month ago to get this going and it seemed like it wouldn't work for YouTube unless my phone was rooted. Am I missing something?
Edit: I added the repository and it says the microg stuff is already installed: https://microg.org/download.html
Edit2: as @scottmeme@sh.itjust.works said here, I had to download the YouTube apk.
Edit3: I can patch the downloaded apk, but still working on installing it.
Edit4: Getting the error "App not installed as package conflicts with an existing package."
Edit5: I think I'm going to have to get ADB going on my computer in order to uninstall the original YouTube from my phone.
Aha. I figured out I was trying to patch a too-new version. The option you're taking about is default, but there's another MicroG option that wasn't automatically selected. Thanks for the help, I wouldn't have known where to look otherwise.