I did not realize there wasn't a description here it must have been accidentally deleted! Sorry, well I supposed I'll wrap it up as usual... I hope you catch some zzz's and lots of love, Amana
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