Wait a minute, switched to Linux because of gaming? I'm considering switching to macOS so I can play StarCraft. (That's not the only reason haha)
In addition, often you can play Win games using Wine, while on a Mac [EDIT: the following is true only if the game needs Vulkan or OpenGL > 4.1] the only way would be using bootcamp (which means you have to reboot every time you want to play).
Disclaimer: I haven't used Mac OS in recent times so I may be unaware of other solutions.
Sales of my game on Steam seem to confirm that. It sold 8x more copies on Linux than on Mac.