[2023] Friend gets unlikeable when we are playing league, advice?

I hope this post is allowed!

I really need advice, a good friend of mine has been playing league for along time now but he always rages super quick and starts yelling and cussing at me. I started playing league last month and I’m slowly getting the hang of it, I understand how frustrating league can be…

But eveytime I make a mistake he calls my actual crazy words like a f*cking retart and if I’m f*cking retarted and wtf is wrong with me etc.

if we are „losing“ (like if we are a little bit behind the enemy team) after like 10mins the game is „over“ and lost and we should just surrender and whatever.

When i snap back he gets more aggravated and starts yelling and if I’m trying to just turn it down he starts aggressively stating what I exactly did and why it was so bad.

I wanna play with him because it’s fun but the sh*ttalking and almost abuse just make it frustrating and I f*cking hate him after every round.

Any advice???