I think most diamond+ people would say jungle is the easiest to carry at low elo since you can impact every lane and snowball the early game.
It'd hard to tell what your specific issues are just by looking at stats but a very common problem I see in low elo junglers is they don't assist their team in getting towers. You can farm great and get a ton of kills but if you don't push objectives then your gold advantage is useless. As a jungler you need to be thinking 2-3 minutes ahead of time, knowing when all your jungle camps are going to spawn, how to maximize your efficiency, and knowing how the lanes are pushing so you can not waste time trying to gank a lane with a low probability of success.
After a gank always try to push out the lane and deal some damage to the tower. You'll occassionally get some idiots who will spam ping you for "stealing" farm but don't listen to those fools. It's nearly always the right call to push out the lane because it damages the tower, denies the enemy laner a ton of gold/exp, and resets the wave to a neutral position.
As a jungler you can also track where most laners put their wards by watching their portrait on the minimap. Players will literally walk to a bush and then walk back in a straight line. It's extremely obvious if you're looking for it. This allows you to know where their vision is and more importantly where it isn't. If you can make the enemy team afraid to do anything because they don't know where you are then you've won as a jungler.
There's tons of great coaches on lol-coaching.com. I'd also be willing to help if you're willing to settle for a gold scrub.