I'm a music collector and saw this coming. "Music" went from a product you buy, into a service you pay to gain access to. You don't pay for music, you pay daddy Spotify for access to HIS music.
Vinyl has turned back into the only form of physical music collection.
I don't buy vinyl, but I do buy CDs for albums I want. I have (what I believe are well-founded) trust issues with services supplying digital copies.
I will say I have bought some nice, normal mp3s in the past from Amazon. Those are fine. But generally I want the discs. I'm going to rip them immediately to mp3, and store the discs away, but I still want them.
I did recently buy a favorite band's entire back catalog on CD, because I want to own a non-revocable copy of their work. Plus it felt pretty good "I give you money, you give me music on CD" felt way less icky than "I watch commercials for fraudulent products and services chosen by a nakedly hostile algorithm, evil megacorporation optionally pays you."
I tried Spotify but it only has about 70% of the albums in my collection. I used to love google play music because you could upload your media and it would be included in your library.
Edit: It needed me to sign up with an email address and I saw it had in app purchases that put me off a bit. But when looking for that app I found Musicolet which looks pretty perfect, just a simple ad free music playing app without all the bollocks!
the in app purchases are mainly if you want to buy PlexPass which unlocks additional features. I bought the lifetime pass years ago when it was on sale for $75 so I can't quite remember which features require plex pass. Its primarily for video but the music section with Plexamp on my phone and laptop is a nice little bonus.