Another more turnkey (but commercial) option is EpocCam by Logitech.
It's a free driver download for MacOS and Windows and then a paid app for your phone (6 dollars I think) and you can use your phone as a webcam, either over wifi or USB.
It works with OBS, Zoom, Meet, and other stuff (maybe not FaceTime though? I don't use it on my Mac but I know Apple is picky about what cameras can work with FaceTime) and just shows up as a regular webcam on your system.
If you have an older or spare phone, the camera in it is likely waaaay better than a webcam.
It's a free driver download for MacOS and Windows and then a paid app for your phone (6 dollars I think) and you can use your phone as a webcam, either over wifi or USB.
It works with OBS, Zoom, Meet, and other stuff (maybe not FaceTime though? I don't use it on my Mac but I know Apple is picky about what cameras can work with FaceTime) and just shows up as a regular webcam on your system.
If you have an older or spare phone, the camera in it is likely waaaay better than a webcam.