I've been using Invidious and NewPipe to watch YouTube for a long time. I don't use an account with either of these. However, I'm wanting to get recommendations based on what I watch and my subscriptions. LibreTube looked promising but it no longer works. When I try to watch videos it won't play. YouTube Vanced is dead. Not sure if another viable solution exists.
I was having the same issues and switching worked. Thanks for the tip!