Free 3 month trial of unlimited music
Why am I still being changed for albums now I’ve subscribed?
iPhone 5s, iOS 12
Becase you are obtaining them from the iTunes Store Library, not the Apple Music Library, which is different (and smaller). The latter allows you to stream unlimited music, or download it for offline listening: downloads only work as long as you p[ay the subscription. Music bought from the iTunes Store is paid for individualliy but is yours to keep forever.