Nvidia can be tough sometimes with linux, but not impossible. Seems like Linux Mint has a Driver Manager program that can install Nvidia's proprietary drivers for you. When you first install the OS, it'll just use the open source drivers, but those usually don't perform as well while gaming as Nvidia's own drivers, so you'll have to switch them after first boot.

protondb is a website that crowdsources how well specific Steam games work, and any workarounds that may be needed, if you'd like to check game compatibility. You can set it to show only reports from PC users, rather than PC and Steam Deck users.