To change your LoL region, you’ll need to request an "Account Transfer" by paying for it with in-game RP (which requires real money). This transfer process is restricted to a few countries, so another way to do it is by using a reliable VPN and creating a new account. But first, you need to download a reliable service like ExpressVPN and connect to a server in the region you want to shift to. Then, create a new Riot Games account, and select the new region. Once you’ve done that, you can simply log in to the new account and play LoL again, but keep in mind that this will make you start from scratch (all your progress will exist on the previous account).