As you already have a Mac, have you looked into Crossover?

So far as I understand, the work that CodeWeavers do with it is the basis for what Valve have done with Proton, so it’s the closest you’ll get to Proton on macOS. I’ve seen people running RDR2 on Macs with it. It’s a reasonable outlay, but it could be a useful tool for running a whole bunch of Windows-only titles via Steam.

There is also Whisky, which is to all intents and purposes, a free version of Crossover, albeit (intentionally) a couple of Wine versions behind so as to not detract from what Crossover does. I’ve used Whisky a bunch to play Windows games on my M2 Macbook, and while it’s not been perfect, and will likely struggle with brand new, AAA games, older titles should work nicely.