This is very much an experiment! I can’t help but keep pushing to see what would be liked or disliked ^^; If anyone sees this, please do let me know if you don’t or do like it!! If you don’t like it, don’t worry I won’t do it again, if you do like it, I’ll do something longer ^^! Reddit and Google search didn’t give me a very clear answer on whether this kind of stuff is something people like ^^;;;
To listen while using other apps, switch the player to Picture-in-Picture (PiP) during playback — it keeps playing in a small floating window (the screen stays on).
To listen with the screen fully off, in-browser playback stops by YouTube's design. Open the video in the YouTube app to keep listening where background playback is supported (e.g. with YouTube Premium).
Open in YouTube app