I don’t know what games you are playing, and I only used Mint for a short time before moving to other diatros, but I remember it being pretty plug-and-play for most things. I admit I was mostly playing through Steam and a few applications through Lutris (mostly FFXIV), using a Wine wrapper to use the official launcher.
For Steam, the Steam launcher will handle most of the game-specific launchers for you. For Lutris, make sure you open Lutris and update it after installing it and before trying to add any games to it. I don’t have any experience with Heroic (or with Windows version of Epic Launcher either).