There are quite a few apps on Linux that will let you dl music from streaming sites and keep it if you have a subscription. My personal favourite is qobuz-dl. I have pretty much all of my favourite movies still from way-back-when but usually don’t downloading new ones as 1) streamio with torrentio is so effective and 2) they don’t make 'em like they used to.

I use Bazzite btw and I am yet to encounter a game that it won’t run.