Front camera flash black screen

The front camera turns on a black screen when i use the flash, either with “auto” or “on” i dont really know since what moment it started doing that but i’ve been doing tests too, sometimes it only tooks like 10 photos and the 11 it shows completely black screen, or other times in the first photo it shows the fully black screen and i cant literally do anything just turn it off and turn it on, i used the 3uTools because that app have a “realtime screen” and through that i can see the screen its very weird it took the photo by the way but the black screen its still there im on ios 14.5.1, i tried to upgrade to 14.6 and it stills showing that black screen so i dont know what to do im really tired, i hope you can help me:(