Sorry this one came a little late! Longer videos always take soooo much more time to edit. I also could do very little about the cars, unfortunately. I live near a busy road in the deep south, home of the loudest cars ;-; 00:00 Intro 01:56 Mouth Sounds Begins
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