Quit playing Kayn in that elo if you're not able to secure leads for yourself early and carry the game on your own.

You want more control over games in that elo? If your teammates haven't left Silver/Gold in the multiple years they've been playing, just mute chat and keep pings, they have nothing worthwhile to say, but you'll occasionally run into players that will ping summoner spells when used, so.

Spam gank lanes and don't type to anyone for any reason, just use pings.

Pick Elise, Vi, Nunu, J4 and just go gank lanes before those idiots can lose themselves the game.

Also taking a break is irrelevant, if you find that you're getting unlucky with the skill level of the people placed on your team, you're not going to be able to dodge or take a break and get better teammates. There's hundreds of thousands of them.

The game gets considerably better to play the higher you go up on the ladder, you don't run into as many games where the enemy Jinx is 4-0 at 8 minutes, people "care" about the game more. Peoples egos are still something you have to deal with, but its easier to play with these people because they listen to reason, you know? You have more people admitting their own mistakes and less people not blaming others.