Yes, E2EE video call software exists, but then you’d be using something other than Zoom.

Theoretically you could have everyone in a call use a plugin that “added” E2EE to Zoom, but I’m not certain such a plugin exists - and even if it did, ensuring everyone you communicate with Zoom uses it would be enough of a barrier that it’d be simpler to just use something other than Zoom that has E2EE baked in.