Why does Camera turn black when taking photos on iPhone?

When trying to take photos, my camera will turn black. I can’t turn my camera around, because it just freezes. When trying to use Snapchat or any other app that can use the camera, it sometimes works, but most of the time doesn’t. It will just appear as a black screen. I’ve tried many fixes, such as resetting my settings, force restarting, and updating my phone.

[Re-Titled by Moderator]