lately the games I play

Lately the games I play are 1 sided, whether or not its my team or their team. one team wins by 20-30 kills, and its all decided in 10 minutes. Ive noticed more, the more I jungle. Last 3 games in a row in 10 minutes im sitting here 0-0 and its 0-10. I try to gank but every time i do they die as I get there...