So when I started Spotify Free, I had the ability to rate songs (the heart icon). Through this, Spotify was putting together awesome Daily Mixes that I was just loving.
Based on this, I upgraded my account to Premium, and after that ... I lost the ability to rate songs, and Spotify no longer makes recommendations of music or compiles custom playlists.
The playlists they do recommend for me are not in my interest groups: things like Rap, R&B, Afrikaans music ... I don't listen to these things!
I've gone back to using Apple Music, and if I can't sort this out, will just de-activate my Spotify account (which I'd love not to do, the early days were AWESOME!)