This is turning into "that week when Sarah spammed us all with audios because she just felt like it." Lol, so far atleast. There isn't much more to this. But I thought some of my favorite lullabies might help you sleep. ^^ I also looped the audio once. I don't know about you but I always do that when I listen to others sleepaids.
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