Hello, I have no storage space left on ipand wish to remove all downloaded music from iPhone/Apple music app. I do not have ‘remove download’ option. It’s delete from library or nothing. It’s 20GB music. I do not want to lose my collection complete!

I have 20GB of downloaded music on Apple Music. I wish to remove all downloaded music from my phone, as it is full and has stopped functioning properly. I do not have ‘remove download’ option with my music, only ‘delete from library’. I want the collection to still be on the Mac and on the cloud, I don’t want to lose a 20 year+ collection of paid for music! I have cloud, but only for photos I think (?) but I cannot have all that music on the phone unfortunately. Please help as I don’t want to lose it all!! Other posts have mentioned the ‘remove download’ option, but when following the exact same steps as other users, I don’t have this!! Thank you!