From blog The Loop, a couple suggestions on making Apple Music work for you:

1. Listen! Use the radio stations and worry less about adding music to your library.
2. Give feedback! Apple Music recommendations rely heavily on you tapping “Love” or “Dislike”.

The issue here is that it takes too many taps per song to love/dislike a song. If that’s what they’re relying on, those buttons need to be front and center, in the app and on the lock screen.