I found the below link that might help. Seems it’s a help article for a streaming software, but it looks free, and they mention using a high quality webcam to stream on OnlyFans, so it might work.
I don't have a Mac but look into if SplitCam is available. It is a software that is like simplified OBS. The Lush actually uses a browser extension. You add it to OBS if you want the menu/status to show on the video stream.
ETA this link https://splitcam.com/download-splitcam-for-macos-mojave-and-catalina (I'm on mobile)
I use splitcam (https://splitcam.com/) which create a virtual camera where I can put a video file.
When needed, I switch to the splitcam camera and audio in my videoconference program, and I start the media in splitcam. Much more easier than OBS, and it works like a charm.
Yes , i use it.
Its work good for me.
And i really like SplitCam, i recommend you to try !
​
I found some video tutorial how to add lovense to splitcam :
https://splitcam.com/help/video-tutorials/how-to-add-a-lovense-toy-to-your-stream