Why are lower elo players so toxic?

Playing on this account it's apparent that in 90% of the games I've played that the players are so toxic whether they're on the same team asme or not. You get flamed for choosing a champion, you get flamed before a game, you get flamed when you're performing better than them, they all think they're held back by team mates and they ignore any advice you give them. I don't get it, is a majority of the community of a younger age? I don't care about though, in fact I relish it. I find it hilarious and purposely trigger them even more lol.
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