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Because You are using an Nvidia Card, this would be a good Point to try. First, you should take a Look in Settings>About and look if You not already run in X11 because You wrote that You have installed Zorin with Nvidia Drivers. And that could make that You already run in X11.
If there should stand that You are in Wayland, You could try it with switching. To do that, go to the Login Screen (not the Lock Screen). Simply reboot for that. On the Login Screen click on Your Profile so that the Password Field appears. It has to be appeared. When it is appeared, You should see a Gear Icon in the bottom right Corner. click on it and choose the Option ''Zorin Desktop on Xorg'' and then log in.
The next Point is Your Card itself. Like @Aravisian already explained, it is an older Card and You need an older Driver. Now, You can add the PPA what he linked for You.
Or You install the Driver in Zorin from the Repositories. BUT: Then You have to install an older Kernel because the Driver from the Repo's isn't compatible with the 6.8 Kernel in Zorin. To install an older Kernel, You have here Instructions:
I would suggest to take the Mainline Tool. So, You have a graphical Interface. For the Kernel, You could take the 5.15 LTS Kernel.