I used to manually port games to macOS using wine/wine tricks/wine bottler, and honestly it’s not that bad. Especially if using GUI versions of all of those. Yes it takes fiddling and tweaking and a decent amount of failure, but I found it worth it once I succeeded in doing it once. That was almost a decade ago, and while I haven’t tried it since (I rely mostly on steam at the moment) I have a few games from say GoG and other places I’m planning to manually port. Ignore the haters, and just go for. Read/watch a tutorial, fail miserably for a while, and eventually you’ll tweak enough parameters and change enough values you’ll find what works. Once you do that for one game all the others will be easier. Every game is a bit different, but the freedom and knowledge you’ll gain is great. If my 13 year old ass could do it on a school issue MacBook to share Skyrim to all my friends you can definitely do it with more modern tooling.

EDIT: I think at one point I ported the windows version of steam, and then could use the “add non steam game” option and then could simply hit run. Didn’t work for everything, but there was a handful of games that was a quick and dirty work around for.