There isn[SQ]t a native macOS version of League of Legends (LoL). Riot Games, the developers, do not offer a Mac client. To play LoL on a Mac, you need to use a workaround like Boot Camp (installing Windows on your Mac) or a virtual machine (like Parallels or VMware Fusion) to run the Windows version of the game. Neither of these options is ideal, as they can impact performance.