As soon as you next to a song, then tap Add to Library to add that song.
On the Now Playing screen, tap on your iPhone.
Do any of the following:
Download a song, album, or playlist: Touch and hold music you added to your library, then tap Download.
After you add a playlist or album, you can also tap Play Dolby Atmos music.
Go to the Music app next to All Songs or the artists whose music you want to delete.
Remove all Apple Music songs from iPhone: Go to Settings > Apps > Music, then turn off Sync Library.
The songs are removed from iPhone but remain in your music library on your other devices. Music you purchased or synced also remains.
Go to Settings Search for music on iPhone