Any music streaming service would do in your case:
- Amazon Music
- Apple Music
- Qobuz
- Spotify
- Tidal
- Youtube Music
Each one of these have a native app for iOS and Android and a web-player you can use on desktop.
The downside is twofold. You are paying big companies to screw over (especially small) artists. - The amount of screw over depends on the service you use. - And you are locking yourself into that service, because all the work you put into “your” collection and “your” playlists can only persist as long as you are paying for that service.
If you are OK with that, just pick the one you like most. Maybe try each one for a month and read a little bit about how each service treats its artists. Switching services is easy as long as you are not invested (curated “your” collection) too much.