[fshee]

FWIW Steam, Counter Strike: Global Offensive, and Dota 2 all worked great for me on FreeBSD. The other things you listed are issues/have their own problems. No Docker is the showstopper for me.

https://www.freshports.org/games/linux-steam-utils/

[hereforphone]

No proton though

[NexRebular]

This?

https://www.freshports.org/emulators/wine-proton/