A lot of android apps made using YouTube music api stopped working. Like vi music, ri music , innertune is no longer working. Google is trying their best to stop them. But you can still use them if you log in with your Google account.
If you have to reverse engineer an API you're effectively using a private undocumented unsupported API. Why would you be surprised that a private implementation has changed without notice?
I tried spotube few months ago and it sounds worse for some reason and thats as bad as it can gets for a music player. And revanced is closed source with patches... something sketchy...
Vimusic has been abandoned for like 2 years already. As for the others, there were issues for a quite while; besides, it's not the 1st time yt changing some crap broke them. IMO, it's about the right time to go navidrome + headphones + whatever provides recommendations (if you need those)
Yeah I've been having issues with innertune and have been using ytm revanced now. The big issue for me is whether or not my innertune history will be merged once I login. I fear it won't and so haven't signed in at all.
Edit: I said fuck it and logged in. All worked out fine.