Is there a reason that IOS favourites work differently to TVOS?
On TVOS when you add files you go to your Share,long press on the folder and it gives you the option to add to favourites.You can then go to your home screen long press on the folder and hide the favourite,but the contents are added to your library.
On IOS the option when adding a folder is to Pin to Home Screen,when you then long press on the folder on your Home Screen you can only remove from favourites not hide.