I'm having a really difficult time climbing in ranked right now (I'm in Bronze 3), and my winrate is around 20% out of the 18 games I've played this season. Most of the games I'm not even feeding, but I seem to always have a problematic teammate who fed or just someone on the enemy team who causes us to lose every single team fight. What should I be doing differently in order to start winning some games? Thanks for any advice.
First, ignore everyone. Second, ignore everything. Third, focus on yourself. Five, say nothing. Six, if you noticed I skipped four then you're looking in the wrong place.
You will climb, trust me. If you spend all your time saying "My team is bad" or "the enemy is better" you are going to find yourself stuck. Just play, improve, and find what you can do better. As soon as you drop into the pit of blaming your team, you'll find it very hard to get out.
You know that super annoying fed guy on the enemy team, that always seems to escape being shut down and snowballs to take over the game?
Be that person for the enemy.
I was going to say play a farm jungler in bronze Like shyvana.
Then i Notice you play Shyvana with courage of the colossus.... That is not vary effective with her. Go thunderloads if youre trying to climb to gold.
Bronze and Silver cant farm so if you farm like a beast you will out scale everyone, and with a 
Rush + ThunderLord people will pop because noone respects her damage.
Always try and gank when you can. Even if it doesn't net anything. You never know you might get a tunnel vision ADC or you could just Q and run away. Q+thunderlord can put someone at 50% HP which will possibly in the next 2-3 mins help your laner win lane.
But no matter what farming and vision is key and always keep vision on dragon your self. Never trust the support and do it yourself. Might bait that enemy jungler thinking he is sneaking it.
Eventually you will see that youre 2-3 levels higher than there jungler and able to solo 2-3.
Always try and push Lanes and take towers yourself when you can, but dont tower dive until you can 2-3.
Watch videos of high elo players spectating other players. I personally like this dude https://www.youtube.com/user/bingegamingdottv/videos
