My downloaded music isn't playing in the Music app.

I press a song that’s downloaded in my library and nothing happens. Nothing on the app will load. I checked cellular data and it was all on. I tried turning off sync library and turning it back on but it just freezes when I turn it off and then turns itself back on when I force the app closed. I restarted my phone and apps multiple times. I still have 68gb of storage space left so it’s not storage. My WiFi is full bars and works on everything else. My data works on other apps. Help

[Re-Titled by Moderator]