cross-posted from: https://lemmy.ml/post/40372957
fyi:
- https://github.com/yt-dlp/yt-dlp lets you download videos (from youtube and also hundreds of other sites)
- for desktop, https://mpv.io/ is free and lets you watch youtube (or any other video) at even more and faster speeds than youtube premium does, among many other features
- for android, https://newpipe.net/ lets you play youtube in the background (and download videos, and block ads, …)
- https://ublockorigin.com/ blocks ads everywhere (and yes it does still work on youtube, at least in firefox anyway)


Not on free YouTube you don’t.
Maybe an issue with your browser then? Which one do you use?
The background play is removed on cell phones. It used to be possible, but they removed it, only so they could charge money for enabling it again. I doubt they removed it from desktop.