As a jungler main, here's a few things to consider.
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Junglers fall on a scale of Ganker to Farmer. Shaco is the extreme ganker. Rammus is up there too. The other end looks like Shyvana or Mundo. Udyr falls somewhere in the middle. Not every jungler is designed to gank for you and camp lanes.
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Are you facilitating the ganks? Ganking does not mean jungler shows up and wins you the lane. Ganking means you as the laner need to participate, which means you need to be healthy enough to participate.
Here's a dirty secret among junglers, and advice that plat/diamond/challenger level guides constantly give out - ignore lanes that are losing hard.
Why?
You can't help when I gank. You've already fed a bit, so the enemy can kill me 1 v 1, and if you attempt to contribute, you're just going to feed him further. Your lane is lost, and our responsibility is to tip the scales of a lane that actually has a chance.
Blasphemy, I know. In your mind we're here to babysit you. However, that is impossible when you've lost the lane so hard.
- How many lanes are losing? Is the jungler being spread thin? If two lanes are feeding hard, the jungler can either attempt to save one by constantly camping (ignoring the other two lanes - risk assessment), or can try to farm to be a bigger presence.
There's so...so much more that a jungler has to consider/weigh/think about that you're even giving credit for.