I've had luck by adding OBS to the setup. OBS connects to the real webcam and microphone, does whatever magic I want, and exposes the results as a virtual webc

I've had luck by adding OBS to the setup. OBS connects to the real webcam and microphone, does whatever magic I want, and exposes the results as a virtual webcam that Zoom uses. I eventually stopped using OBS because it was overkill, but it worked very well.