Is there any reason for you to use the LTS version of Pop?
I mean, recommending someone to jump from one to another distro because one thing doesn’t work is bad advice, but if you don’t have any compelling reasons to use the very outdated stale version, I’d recommend switching to either the normal non-LTS version, or to another distro all together.
If you decide for the latter, maybe consider Bazzite (for gaming) or uBlue. They both have a Nvidia -variant with the drivers already baked in.
Those drivers are known to break or be unreliable, so you always have the certainty that everything will work on this immutable system.
They both are very modern, offering the newest desktop versions, and should provide you a great monitor setup due to the new display protocol.