yeah yeah, everyone has heard it!

I know that everyone has gone through something similar. But I am just looking for advice. I am nothing special, a silver 3 guy who enjoys this game. But even though I usually get my 100 sometimes even 120 cs per 15 minutes. Even though I try to learn champion combos and practice them daily in order to learn and grow I constantly get these type of players - ''I dont want to go supp, fk it Ill just go as an adc as well.'' '' oh i am meant to go supp, fine if youre picking kalista ill go kayle into ezreal and leona - oh nice lvl3 lets trade. Doesnt matter that leona has more health and more cc, lets do it. And then I get blamed for not enough cc and not enough damage. LET ME MID!! Oh you wont?? Ill feed intentionally. I dont care that kata can be countered!! She makes it easy to get pentas if im fed. Who cares about farming or backing off when you realize youll lose the trade.... I honestly dont know what to do. They dont listen, and nothing changes. I know I make mistakes to, but I try to play decently even if I dont get the position I prefer. Maybe riot could impliment a new reporting section where you report someone for being completely uncooperative and after a few reports regarding this they might follow one game or so to check if its true. And then if it confirms they would get banned from playing for a while. Something needs to change. I am sick of praying no to get a troll in my team or to have someone who knows the basic playstyle of a certain champion. Change something so that players regret being complete flamers and thickheaded children.