Stouchi Continuity Camera Mount, iPhone Webcam Mount with MagSafe for Mac Desktops and Displays
You can use your phone as your Mac's webcam if your iPhone and Mac have the latest software; it works as easily as AirPod pairing in my experience. This particular mount also lets you mount on tripods. (fyi, only iPhones 12 and up have the built-in magnetic ring aka MagSafe in the back that lets you use this mount)