Help me Reform

That would be called third party software, and is against Riot's ToS, and will get you permabanned. Also be careful about changing any files as well, as that can also result in a ban. A little bit of self control goes a long way. Unless you're planning on going pro, and you're trying to get to challenger so people will give you a chance, just try to enjoy the game. Losing sucks, but it's just a game. Requeue and enjoy the next one. No need to get mad. And yes, if anyone is toxic to you, mute them and be sure to report them after game so nobody else has to deal with them

Bind the chat key to f12 and then disable the f12 key.

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I Need help reforming, is there an add-on or anything really that can disable chat 100% without being able to turn it back on without restarting the client? I can't stand people playing bad and so many games where if someones being toxic to me, and if i say 2 negative things, they seriously turn my team or enemy team against me. Inb4 just mute.

Try to recognise that by flaming you are not helping your team, there are many ways to stop being toxic, but I would suggest to just mute everyone at the start at the game. Riot took away the refusing to communicate report for a reason, once you feel like you are less toxic, stop muting at the start of the game, but the second someone becomes toxic and you feel like you want to respond by flaming and raging at them, mute them. Slowly but surely you will start being less toxic. Remember guys, this is how I stopped being toxic, it might work different for others.

youtube it. there is something you can remove in the lol files to remove chat. other than that you can move the chat down so u can see it or just control yourself and not type anything. I just got chat restricted for defending the enemy so really no matter what yoou do you will always get reported.