Zoom won't open on Windows 10 but it's still running in the background

Ok, so as mentioned on the title, my Zoom desktop app won't open. I still can install it, however when I try to uninstall the app it won't allow me. It pops up with Error 3000 and I can only uninstall the app via external application. 

But, even if I uninstall the app, it says the app is still running in Windows System Tray, and also I cannot close the app using task manager. It only closes when I turn my PC off.  Zoom was working fine until around 2 months ago, it randomly just froze when I tried to join a meeting using a link. 

I really need assistance with this issue, and I'd really appreciate if you can help me resolve this.
Thank you for reading.