Zoom

There could be many reasons why an app doesn't install. It may be that the Operating System for your tablet is not recent enough, or that you don't have enough free storage space to install the application. The following page on support.zoom.com lists the requirements for iPads and Android devices:

https://support.zoom.us/hc/en-us/articles/201179966-System-requirements-for-iOS-iPadOS-and-Android

If your tablet was provided by your school or employer, they may also have restrictions about installing applications; in which case I would check with the school or employer's IT department.

I hope this helps!

Craig