I want you to watch a couple things before continuing. They're short, but necessary:
https://www.youtube.com/watch?v=Fyq844xq2yY
https://www.youtube.com/watch?v=r6zIGXun57U
A realization I came to a while ago is that learning to deal with nasty people is as much as part of this game as learning to stay behind your minions when
is in your lane. Learning how to not go on tilt when you're 0/11 because your support never follows up is just as important as learning how to survive botlane. Learning to maintain a sportsmanlike attitude is just as important as item builds.
Let's call the first things "soft skills" and the second things "hard skills". When anyone thinks of gitting gud at a game, they usually mean the second ones; but the first ones are arguably just as important here. And they're even harder to develop because it's all about controlling your mind and your reactions - not learning to play the game as much as learning to play yourself.
If you can't develop those soft skills, you're doomed to bronze.
You have to decide if that struggle is worth it - or if struggle is even a thing you want associated with a game you play for fun. Maybe climbing further will be more fun? It's hard for anyone here to say because it's all in your mind and what you think.
Please mull that over - but let's talk about specifics in the meantime.
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Your history shows you're at a winrate of 8 and 11. This is not bad at all. Considering that the matchmaking tries to give everyone a 50% win rate, you're very close to normal.
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You play a lot of different champions, roles, and maps. It could be you're spreading your skills a bit thin in your most recent matches. Your best 3 champions are
,
, and
, which to me is a bright flashing neon sign that says support main!. Did you enjoy your time playing them?
What I'm saying is, don't play everyone everywhere - decide what you like (in other words, what you find fun, not what your friends flame you less on) and concentrate on it. Start with one champion in one role. Use different champs until you find one you like the feel of. Once you've got the basics down, try another champion in another role. The idea here is that you can eventually know how to play each role at a very basic level, and then branch out.
Don't feel bad about using the intermediate AIs - they are not "useless" as some people like to say. If you want to decide if you like a champ, you can do a lot worse.
Something you'll notice about high level play is that people are very married to their role, because that's where they spend all their time practicing. Everyone is a specialist in League.
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Try signing up with a free service like Mobalytics that analyzes your games and gives you more targeted advice on what you need to work on.
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You said your friends tend to flame you? It could be that you either need new friends (seriously wtf...), or that your playstyles are just not compatible. There's nothing wrong with finding another group to play with if it makes the game more fun for you. There are larger groups like Madcast that have some awesome people, there are individual players looking for people to play with over on the recruitment boards, there are people who will help you learn over on reddit /r/summonerschool and /r/leagueconnect.
Best of luck dude :)
[slayer-jinx-catface]