Music I own shown as not available in my country

Hi, I'm new to this forum, so if my question has already been answered, could you point me in the right direction please? My problem is with my iphone 13 mini. I have uploaded music from my computer that I bought and paid for to my phone, but some of that is shown as not available in my country or region. Most fixes that I found are to do with this problem arising in Apple Music, but I don't have Apple Music, I have the tracks on my computer. Any help would be appreciated