The PCGamingWiki is also another good resource especially for older or more obscure games. Most fixes are Windows specific but they can be used on Linux. For example here is the page for Need for Speed III: Hot Pursuit where it links fan patches and an open source engine recreation.

If someone is really desperate there's always the option of searching GitHub issue pages like dxvk to see if it has been documented, if there is a temporary fix, if a fix is on the way, or if it's going to remain a constant issue (ex. FiveM).

Absolutely this. It is becoming increasingly rare to find a game that doesn't work in linux (excluding stupid copy protection/anti-cheat implementations). We haven't reached the works-out-of-the-box stage but the combination of proton-ge/wine-ge with lutris or heroic provides a solid alternative to games not on steam.