I tried to use the camera in the windows 10 app both for calls and in the preview in settings>devices. In both of them the image was black. I tried a lot of times, closing and reopening the settings panel over and over, and only ONCE I've seen the camera working properly. It was like the fourth time I tried. But then I checked again just to be sure and it was malfunctioning, again.
I checked my camera outside Teams and it works perfectly. I checked if the drivers were uploaded to their last version and they were. I checked the privacy permissions of the camera in the pc settings and they were given. I also checked the media permissions in Teams and it was also ok.
I tried uninstalling and reinstalling the app, as I've seen someone recommend here, but it's still worthless. While I was doing this, I tried to use the web version and, to my surprise, the camera worked when I made a call. But unfortunately, the devices option in settings does not exist in the web version, and I use that a lot. I have to use the app every day so I really need it to work properly, I can't just switch to the web version because it lacks a lot of functions. Can anybody help me find a solution for this?