I have a 13 pro max.The last few days I have not been able to use my back camera. The font camera works fine. The back camera is able to be used through third party apps like Snapchat. If I am on the back camera screen it is black and I can toggle between the zooms but it never changes from black. One of the times I rebooted my phone it gave me a notification that the OS didn’t recognize my camera as Apple. I have not dropped my phone since updating the OS, and I have seen similar issues other people have online. Thank you.