After upgrade Nvidia driver wont install and can only use 1 monitor

Logging in on Xorg is the first step.
The next step is to correct your driver packages.
So can you please open terminal, now logged in on Xorg and run each of the following terminal commands one at a time:

sudo apt --fix-broken install

sudo apt remove --purge '^nvidia-.*'

sudo apt clean

sudo apt update && sudo apt upgrade

The 470 driver should be used for the gt 710 card. Which means you will not really be able to use the later drivers with Wayland support.

sudo apt install nvidia-driver-470 nvidia-dkms-470