Xiaomi 15 ultra china version (eism)

Hi

I'm facing a problem with my newly bought Xiaomi 15 ultra i bought it from china last month and came back to my country and i want to activate my esim but it's not showing the option to activate esim my carrier provider support esim and i have other phones with esim need help to activate esim and i saw some thread saying you need to change the region and there is no option for that also

Please help