4 and 3 man lobbys

I haven't been playing league of legends for a long time, However from my understanding, matchmaking is trash, the games community is awful, certain champs aren't balanced and the meta is toxic. This being said the worst experiences i have so far has been generated by 4 and 3 man lobby: queuing into them and against them has been bad. It's almost as if the most toxic, least likable people ever group up into 1 lobby and set out to ruin the game. It's just a normal league games toxicity amplified by 10 fold. I personally hate the idea of trying to play a normal game then getting in the abomination of a 4 or 5 man in my lobby. I believe i shouldn't have to worry about this its just awful.