League for me is not fun at all

So, I've just spent my whole day trying to get in my promos, and then loosing it because shaco support went 4/12/12 and our jg went 5/13 and never ganked. Im not saying I did perfect because I absoloutly did not. But Ive realized something. O'ver the past couple days ive been getting in and out of my promos because of trolls and feeders and people who want to make the game unfun on my team, weither on purpose or not, The game just is'nt fun! Im not having fun getting oneshot by a fed rengar that i didnt do anything to. Im not having fun getting camped by xin, Im not having fun getting one shot by tanks, (seriously tank ekko and fizz are really just op and unfun) Im not having fun. Under any means of the word. The game has become a place where people just want to do anything to get a rise out of someone.

 Sometimes even the game itself feels like its against you, It feels like its trying to make you loose by placing me with silver players and making the enemy team gold. Its not about working as a team anymore, it feels like its about trying to not get into a fight with your team, Or be lucky. Luck pretty much decides games(why does everyones "bad game" happen in the game im in with them?). If I was just on the other team, we would have won %50 %50. The most frustrating thing about this is "your just not good" or "just play more" I play every hour I can, Everytime i have free time i spend on this game trying to improve, I got gold last season, I went 9/1 in my placement and got Silver 5,(good job on that one riot, really makes a lot of sense) This may be just ADC mains like me. But it feels unlike a team game, The only games I win is where I carry or get carried, There is no inbetween. Im kind of sad how this has turned out, I hope someone can understand how i feel about this, and how frustrating this game is, and how unfun it has becaome to me.