MacBooks are '''not intended for gaming!''' Furthermore, in any real sense they can’t be upgraded to be gaming machines. Not while remaining portable.
In this regard, you can buy PCs that are [https://www.partitionwizard.com/partitionmagic/how-to-make-games-run-faster-008.html|optimised for gaming] with super fast graphics cards, top end processors, big and fast disks and other components.
You probably got the Mac for reasons completely unrelated to gaming. Anyway, you’re here, and this [https://www.macgamerhq.com/hardware/can-i-run-it-mac/|Can My Mac Run It] guide is for you.