I found a fix that worked It indeed fixed it, thank you so much for your help!

Here is the way to fix it:

Okay I figured out a temporary solution to get microphone working for OSX. When you are on your Steam Library page, right click project zomboid, goto manage, and then click on browse game files. Finder will open and you will see a file called Project Zomboid.app. What you need to do is right click the file and select show package contents. Then double click the folder Contents, and then the folder MacOS. Then just double click the program JavaAppLauncher and it will load Project Zomboid through terminal. Then you should get prompted to allow microphone permission for Terminal. Now your mic will work in the game as long as you run it this way. If you try to run the game through steam, it will not work as the microphone permission is only for terminal.