As per title, if you had to switch away from Spotify ASAP, what streaming service would you go with? Ideally something around the same price range, meaning the change won’t incur in extra expenses. Also good if the service does its job well: playing music and paying artists. Any feature parity with Spotify is a bonus, except podcasts, which don’t require a paid streaming service. Or audiobooks. Focus on music. No piracy either (it’s illegal). The more money going to artists, the better.
Edit: extra bonus points if it is not 'Murican! Also, piracy is very illegal!!!
Deezer
Then while using that, learn to self host Lidarr + deemix + navidrome or jellyfin
Use tailscale to connect remotely very reliably and securely.
Use Symfonium app to stream your whole catalogue.
This is not what I would consider a difficult setup and it is incredibly reliable once deployed - I have had zero downtime in terms of being able to access and listen through Symfonium in over a year. You can download for offline use through Symfonium too.
Lidarr currently has an indexing issue to do with their metadata servers and musicbrainz changing stuff - they are testing the fix as we speak and it will be back up and running soon. This doesnt affect music you already have, just your ability to search new music.