My selfie camera doesn’t work

Hello everybody, I have an IPhone 13 Pro Max since April 2022 and yesterday morning my selfie camera started bugging ( it starts well then after a few seconds, it stops working, like the imagine remains the same on the screen ). In the afternoon it stopped working completely: the front camera works well, but if I switch it to the selfie camera, it remains blurry, and after a few seconds, it goes back to the front camera.

I tried all the solutions I found on internet: turning the phone off, resetting the settings, resetting the entire phone, but without any success.

Can you help me?

Giulia