"This isn't my fault! My team is making me do this!"
Whenever somebody decides to have a bad game and starts intentionally feeding or going (active) AFK or just in general being a shithead, they will try to place the blame on someone else.
This defense does not work.
You are in control of your actions throughout the entire game. Unless somebody actually has a gun to your head and threatens to ventilate your skull with the entire clip unless you ruin the game for everyone, nobody is forcing you to do shit.
Of course, most League players have butchered their goddamn skulls with a hatchet in order to suppress as much of this horrible feeling that is sapience as possible, and think that this is an actual valid fucking defense. It isn't, and if you get banned for being a shitheel, you fucking deserve it. It is almost a tragedy on Shakespearean levels that you will never understand how you fucked up and why you got banned, but Shakespearean tragedies inspire sympathy. There's no sympathy to be found for you.