To be quite honest, blaming your team for "Feeding" is a very bronze mistake.
Did you try to stop them? Did you contribute by buying pink wards? Did you try to gain vision control? Did you pick off people or just die in teamfights? Did you CS and try to push lane while your teammates were ganked? Did you win your lane and proceed to take the gold lead to the lanes that needed it?
Probably not, but even then. That's the biggest mistakes of Bronze players.
Lack of vision, blame their teams for losing in a team aspect.
I'm looking at your OP.GG games, and the obvious problem is itemizing poorly.
You built RoA on Elise jungle? Why not just go Rylai's and provide a slow? Or Dead Man's? Those items are amazing on her. Not to mention you took A LOT OF KILLS. If one person takes a lot of kills, where does the rest of the gold go? To no one. You having a ton of kill is GREAT for your KDA, but it's poor for your team.
You had 14k on your Elise game. Do you know how much the lowest person had? 10k.
On their team the lowest they had was 13k.
Reason why? They didn't have one guy with all the kills or assists. They also had a much better comp.
I have no deaths, Riven has fed 6 kills to Fiora (who then goes and carries the game by, literally, two-shotting everyone).
Can you tell me where this is? I don't see it in your match history at all.
I have 1 death as Graves, yet my support, mid and top have all fed kills, and Darius can't do anything to the ever so balanced Nasus (I even picked top, but he just locks in anyway as last pick)...
Don't see this either, I see you losing to a Nasus but not with a Darius top. I also see a Darius losing to a Tryn.
Maybe we're looking at a different story? The problem is the same. If you constantly blame your team and fail to understand the concept of " We're a team. I have to help the team. " You're not going to improve as much as you did last season. League HEAVILY relies on teamwork in Season 6 without green wards etc.
If you were supportive and understood " Okay I could have done x x and y, we could of had a better shot of winning. "
BUTNOPE. You had to put your team under the buss.