Rough edge apps have been around for years. I tried one that worked in the browser and could connect to OBS on your laptop, it was just too cumbersome though.

Rough edge apps have been around for years. I tried one that worked in the browser and could connect to OBS on your laptop, it was just too cumbersome though. Apple actually did come up with a good solution for mounting the phone. A small disk that connects to the iphone with magsafe and has a flip out tab that can hook on to the top of the macbook. It's surprisingly stable and nice.