Apple Music - This item is not currently available in your country or region

I have a lot of CD's that I have purchased over the last 30 years.

I have ripped them all onto my MacBook Pro and I store them in Dropbox. The Music App on my MacBook Pro accessed the Dropbox file for my music library and it all plays fine on my MacBook.

There is 140GB of Music

I want to download all of the music onto my iPhone 16. It has 512GB of storage space so there is plenty of room.

I have connected my iPhone to my MacBook and synced the library.

The music does transfer and you can see the songs on the iPhone.

HOWEVER - and here is my problem...

Most of the songs on each album are faded and when I tap on them to play it says 'This item is not currently available in your country or region.

It doesn't make sense because some songs on an album but most won't.

It shouldn't be this hard.

PLEASE HELP!!