I cannot share computer audio.

I've been having this same issue since the first of the year 23' when it seemed like Zoom did an update. Between mac and Zoom, I can't seem to get my computer audio to work within Zoom. I can turn off the background suppression to get the audio I need, but that isn't helpful when I'm trying to run webinars and need to mute my audio and still run sound.  Hoping this gets resolved soon. We use Zoom for webinars and meetings. For my meetings its no big deal, but I may start looking for a new webinar system if they can't fix this. 

I also had the same problem after migrating to a new Apple M1 Macbook from an Intel-based. After a lot of searching around, I understood that to work you must have the ZoomAudioDevice in the  Audio Midi Setup app where you can see the installed audio devices. 

In my case, I can see the Zoom device on the Intel but nothing on the M1 even after agreeing many times to install it from the Zoom app.  I went to the "/Library/Audio/Plug-Ins/HAL" dir where I found the Zoom audio driver on the Intel and I discovered that on M1 the directory is not accessible to everyone. I fixed the permission, then I re-install the driver with the Zoom app and now it works!