Looking at your match history, you die faaar too much. Stop dying.
I haven't watched your games, but I would guess you're like most of the low elo players I play with. You play super aggressive and sometimes it works and you get ahead and snowball, and other times it doesn't and you're fucked in lane. Then you keep playing aggressive and keep dying.
That's really not the way to play if you want to win. It's the way to play if you're a yolo player that doesn't care about winning. Because the games you get behind, it makes it damn near impossible for your team to carry, even if they won lanes. Which makes them upset that they won lane, but didn't get fed enough to effectively kill their super fed players.
Again, haven't watched your games. But your amount of deaths strongly indicate this type of play style, which is consistent with most people at our ELOs.