Control access to your camera on Mac
Some apps and websites can use your camera to take photos or video. You can decide which apps are allowed to use the camera on your Mac.
On your Mac, choose Apple menu > System Preferences, click Security & Privacy, then click Privacy.
Select the tickbox next to an app to allow it to access your camera. Deselect the tickbox to turn off access for that app.
If you turn off access for an app, you’re prompted to turn it on again the next time that app tries to use your camera.