I honestly don't remember making this...it's just a random video from my files. Not subtitled... Don't read below, it's just sad: I spent the whole day crying instead of doing anything..so I dug this up before I spent another day crying about not even doing the thing that makes me happy.
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