For more advanced mapping (should you need it — see al_borland's comment) check out Karabiner Elements. It's been rock solid for me.

Keyboard Maestro will also do the trick, but Karabiner Elements might be lower-level and less fuss once you get it set up. Still, Keyboard Maestro is de rigueur on macOS, and worth every penny. You should buy a license anyway. (I'm not affiliated with KM, just a very happy user for many years.)

https://karabiner-elements.pqrs.org/

https://www.keyboardmaestro.com/main/store

In my experience the best place to start with such questions is SuperUser. [1] There are a few different options.

If registering an account there to ask questions, lurk for a while. They have a unique ettiquite.

[1] - https://superuser.com/search?q=map+windows+keyboard+on+mac

In the macOS keyboard settings you can flip the Command and Option keys. That’s really all that’s needed.