You can start a Zoom test meeting to ensure your audio and video are working properly before an important video call. You'll need to have either the desktop or mobile app to do a Zoom test meeting.
If your Zoom audio isn't working, there are many possible reasons for it and several ways to troubleshoot the issue.
If you regularly make audio or video calls on your computer, you've seen people appearing out of frame, or hunting for the unmute button, or otherwise trying to get their technical setup ...