The main four League of Legends games are League of Legends (the original), Teamfight Tactics, League of Legends: Wild Rift, and Legends of Runeterra. They all run on a different selection of devices, but they're all free to download.
On your phone or tablet, you can download Teamfight Tactics from your device's app store. It's available for free in the Apple App Store if you've got an iPhone or iPad, and the Google Play Store if you've got an Android.
Quick tip: Riot Games also makes Valorant, a first-person shooter that mixes modern gunplay with League-style magic spells. It's completely separate from Riot's other games, but still free-to-play. Windows users can download it from the official Valorant website.
For Huawei devices, you can play the game using an unofficial APK from a third-party website. One of it is from the LDPlayer where you can download an LDStore APK (make sure to open it with your mobile browser), once installed you can search and download the wild rift APK. 2b1af7f3a8