Why do i get so many bad people.

When i first got into plat i never spoke to anyone and in lane i usually never got any kills or deaths but one of those sometimes happen. Recently i have finally understood that trades are not worth the risk and its all about cs not kills and you never do anything that could get you killed. Now i can finally carry like i did in gold and silver but i have been toxic in the last 3 games because my teammates gave me ebola look at my last 3 matches when i started to play viktor, all my team does i feed and i cant do anything at all and its making me toxic and now prob gonna get banned because this game hates me.

TL:DR why do i get so many feeders?