It sounds like you have the new design in the mobile app for free users.
The radio has been discontinued in the new free version.
What happened to all my saved music?
Any songs, playlists, artists, albums, and podcasts you saved before the app was updated can still be found in Your Library.
Note: Songs you saved are now in your Favorites playlist.
We’re currently exploring different social options for the free, ad-supported service on mobile. Right now, the ability to search for and follow your friends is unavailable. We hope to have more information about this soon.