NewPipe can check all these boxes
Discussion
Does it actually download audio with you?
With me it doesn't. Or I don't know how.
It's what i currently use, but I hate not being on ✈️ mode when I'm listening to stuff.
It does, I used to use it often to download audio for later. When you download, set the format to an audio file.
Ahaaaa, I see. I always went to my Graphene downloads folder to see if it downloaded. It never was, so I assumed it didn't work or took forever.
But I have to go to their in-app downloads page.
Got it! That's good enough.
Great! Yeah and there's a setting to change the download folder as well.