Itunes store not working
hello everyone...i have a problem regarding my itunes store..i am from pakistan and i also selected my country/region as pakistan but when i tap on itunes store on my iphone ..it takes me to itunes u...so when i changed my country to UK then itunes store works but when i try to buy a song or something like it says"your account is not valid for the use in the UK store ,you must switch to the pakistani store"
plz help..thanks
iPhone 5s, iOS 11.3