I went out drinking with friends last night, and woke up this morning with hardly any voice at all! My throat is sore...probably from the alcohol. I don't usually drink much haha. So anyway...thought i'd make this instead!
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