Instagram - dookie000 Wednesday Tingles - Playing With Switch Controllers. I got a switch but haven't bought any games yet... at least I can get some use out of the controllers!
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