I use FreeTube which seems to still work fine but it seems to me like the browser plugin that opens YouTube links in FreeTube does not work properly sometimes
I might but I am not sure. My internet speed is often a bit unreliable so if I had a drop in quality or issues with buffering I ´just attributed it to that.
Is YouTube starting another attack on third party clients?
I’ve noticed than most of them have stopped working including all invidious and piped instances