Has anyone had friends in league like this?

Hi I am fang, I love to play league and I am a jg/adc/support main. I have been playing this game since September or October of 2017, I didn’t start alone I had many friends that joined me too Btw these a friends I know in real life

TLDR: i hav a “friend” who thought he was better than everyone else and then rains on me and my friend’s parade and becomes toxic when he can’t prove a point

One of my friends was really good at the game, he was the second best in our group and over the time a lot of us have been progressing overtime and then we eventually got to the point where we were somewhat equal to him

During or progression of league like discovering new tunes and champs to play and main he started doing this “one-up” thingy where he would buy a champion that we have tried to begin mastering and always challenge to a 1v1 and say “bet I’m a better ___ than u” he always trying to prove that he’s better than anyone and I do not like that, back then league was fun, it was new, it was exciting! But now he’s really toxic and mean to us and flames us a lot on our flaws when he doesn’t acknowledge his and when he does he brushes it off as a joke

This is how toxic he has become

So we were in a normal draft mode I played kayn jg and he played leblanc mid, he’s always like “UR A TRASH JUNGLER” when he’s never even seen how much I progressed with kayn. So then we won the game I had a good kda a decent amount of dmg dealt not something that’s carry material and after that I told him so how good am I with kayn? He had the nerve to say this “KAYN IS BRAINDEAD CHAMPION” Like okay I will admit kayn is not the hardest champ in the game nor is he the easiest but no champ is braindead I then told him “bro stop bullying me I just want to play the game and have fun” he had the nerve to say this “Climb to silver and I will think about it” LIKE WTF???????? I usually choose to stay away from ranked becuz I dont like playing competitively and I have told him a lot in the past?? It’s jot even me, I also have other friends that have had their parade rained on? It PISSES ME on how he thinks he can control how we play or how he has some sort of power over us??!? He always calls us insecure and stuff and I’ve had it

More shit like this happens a lot and idk why my friends still play with him maybe it’s because we were all lifelong friends or something?? So have you have guys ever had a situation like this?

This post is about sharing ur experiences with a toxic friend in a game u know irl in case u want to talk about it, what did u do? How did u avoid him? How do u try to avoid someone in ur friend group that you don’t like? Does competitive game bring the worse out of someone? This is my first post and I hope this goes well Thx for listening