iPhone 17 Pro not appearing in Finder

On my new iPhone 17 Pro, I can no longer copy CDs that I had copied in Music on Mac to the phone. I connect the iPhone to my Mac, but it no longer shows up in Finder or in the Music app. This worked fine on my older iPhone, but it no longer works. (On the phone, I see the names of all the albums I had copied over on my old phone, but the music files aren't there so I can't play anything.)