iOS 17 system data bug

I am having an issue that i think most of the users are having.

Just bought a iPhone 15 Pro 256gb, and after one month of use, the system data of the iPhone storage is HUGE!! i was having about 19gb, 20gb and even restarting the phone or cleaning some apps, it keeps getting back to it. After doing the whatsapp backup, it went from 20gb to 50gb!!

I dont know if it is a problem of cleaning of the garbage data or problem of miscalculating the real size of it, but it is a problem of iOS 17.

Just installed the 17.1.2 and the problem remains. A lot of users are reporting the same issue.

I dont know what else to do.