Linux users, around what percentage do you think the compatability with games is?

I can get my darling Final Fantasy XI up on Linux but I've found in lived experience of this that unfortunately while Final Fantansy XI's code is so old now that it's not unrealistic to expect it to be wine compatible the whole trouble is that there's a whole slew of third party applications that are grey market and violate terms of service that I use and am just careful with that don't actually work on it. I'm not talking Taco's either like SE would pitch a fit there but like Auto lotting Seals and such which is why I have such a massive supply in storage of seals to do BCNMS whenever I want to go. as well as crystals that I just feed to my moogle to turn into seals and occasionally unload stacks of clusters.