Firstly I discovered several Zoom security issues when installing for a friend, on their computer, including finding thousands of private email addresses of home owners under Telus.com. I informed Zoom of these issues, and they did nothing, not even acknowledged with a case number.
So I did more research, and Bruce Schneier (one of the world's foremost security experts) wrote an article on Zoom's problems. It can be accessed
here.
Sorry to be a downer. I use Discord - up to 50 people can share a video chat. and it's free. It doesn't seem to have the security concerns of Zoom, but I left that industry 5 years ago so I'm no expert.