Adding Contacts

Or is there a way to manually add a contact, without having to upload it from a cloud?

Hi SJaco08!

If you have your Google account linked to your Zoom account on the web portal (Personal > Profile - Calendar and Contact Integration), you can create a contact from the Phone Call History to your Google account by clicking/tapping the ellipsis (...) on the row where the call shows in the Call History. This works in both the Zoom computer desktop app and the Zoom mobile device app.

Hope that helps!