You know whats so hard about climbing out of Silver?
People have no intentions to end the games.
Just aced them and we still have 5 left and they dont have anything but nexus towers and inh? Better take baron! Only 2 of them remaining? Better go for blue! We are in their base and they are about to spam? Better bm and throw the game!
Its really hard to win when 4/5th of your team dont want to win.