iPhone 11 back camera and flash light aren't working

my rear main camera get black screen and flashlight intensity cant work. But for 0.5 camera &flash, front camera still working fine. Only just my Rear main camera Black screen. I’ve tried all of the solution from internet but still not working, i found that many people have same issue like me, with every type of iphone (X,XS,XR, and up more) you can see in this apple community. Ive tried to downgrade, still not working.