Ironically, this could kind of be an answer to the main thread by itself.

Could be a new gameshow: Boomer or Toddler

Thank you, that worked. At least for the last few days.

I tried revanced for a while. It worked for a little and one day videos were suddenly buffering for 5 minutes at a time after around a minute of playing. I read online that it might have been yt measures against using a client like this (changing account or logging out didnt do anything. Browser played the videos fine)

Firefox with adblocker and the extension to be able to play in the background has been my savior. Works flawlessly.