Make a perma Mute Please

Well, where to start?

How about we start with you. Focus only on yourself, both on the inside and on the Rift/Abyss/Treeline. Recognizing that you and only you are in control of yourself will go a very long way into becoming a better you. Recognizing that you have no control over the people you play with and accepting that will help even more. You are the only one playing the champion you picked. If someone harps you for your pick, ignore them because you CAN AND WILL be better than them, they just don't know it yet. Instead of being insulting or focusing on other peoples' skill level and playstyle, try to use encouraging words. If someone goes for a play and it ends horribly, try words of encouragement or at least neutral things: "Nice try." "Don't worry about it, we'll get them next time." If you aren't comfortable with that, just don't say anything.

Second, use the tools available to prevent you from entering into previous bad habits. If that means breaking off your enter keys so you can never chat with them again, then do it. (Most keyboards you can just pop the keys out and then put them back in later without having to replace the keyboard.) If someone starts becoming toxic, and I hope you are better able to recognize such things, just mute them. Responding to them in any way shape or form will only make it worse for everyone. It's the easiest solution that some people think should be the reason why they shouldn't get banned. This is untrue as not every insult is in the filter especially if you're pretty clever with them.

Lastly, if all else fails, take a break. You deserve it. Do something productive. Take a walk and get some fresh air. Read a book. Do some chores. Anything to take your mind off of the game and bad experience so you can come back with a clear mind. Sometimes I do some yoga or meditation as it helps me refocus on only myself and my gameplay instead of worrying about what others are doing.

These are however, just suggestions. Different things work for different people.

I can always be toxic in Discord Heh No one that i play other games with plays league so it sucks