Deceive VS LeagueLocaleLauncher

It still shows you're in game to them. Try using something like Deceive. https://github.com/molenzwiebel/Deceive

There's a program I'm using all the time called Deceive, you can find it here: Deceive It is approved by Riot (proof in F.A.Q. of that github repo.

[https://github.com/molenzwiebel/deceive/releases/tag/v1.12.0

welcome to league of legends where you can do anything even stuff riot tells you you can’t. here you go fellow new internet user friend. but you can also appear offline or remove your shitty tokens from your profile. You can also change your skin to any even if you don’t own it (only you see it) but for obvious reasons I can’t link that. If you have at least 1 finger and half a braincell you can find it yourself tho.

I've been using this to get rid of that problem: https://github.com/CollinMcKinney/LeagueLocaleLauncher

I used to swap my language and used https://github.com/CollinMcKinney/LeagueLocaleLauncher/releases , just confirmed it still works even with multiple riot games installed (I play Valorant often) was able to set my client to Korean and it persists through closing both league and riot client. Just need to select your language once and then can launch the game as normal every time afterwards. Very intuitive tool

Note: You need to use a tool like LeagueLocaleLauncher to download the game files first.