I use youtube music.. It has everything I listen to and more.. Want an obscure college band (Go ZURCHER) ? .. It is there! Want some rare DnB (source direct).. It is there? Want a curated ambient collection? It is there! UX is totally fine on Apple and Android..

I tried switching from Spotify to Youtube Music but the "download for offline" functionality is incredibly broken -- often doesn't recognize that it's on wifi to start downloading, multiple minutes to download an album that Spotify downloads in a few seconds, and for a longer playlist the pause/resume when you go off wifi doesn't work at all.