I saw a tag but only linked to 4 questions. If not this site, where please? I am trying to find out more to help connect older and more vulnerable people in our village during isolation!
It is only on-topic where the problem is with or in using the desktop PC based client.
If your problem is with the Android application then there would be Android Enthusiasts or for Apple devices you could ask at Ask Different. Otherwise for the web chat (in your browser) version it could be asked at Web Applications.
If your problem is in setting up an account or payment, then you should contact Zoom technical support directly.