The #1 thing you as a laner can do to help your jungler help you
When you see an enemy ward somewhere, or hell, even when you SUSPECT something might be warded, TELL YOUR JUNGLER SOMEHOW. Ping, it a few times, type "warded" in chat, walk over to the ward and dance on it, I don't give a fuck. Just let us know so we don't walk to your lane and stand there wasting time, only to find out that it's warded when the enemy jungler comes to counter-gank.
I know people have this adverse reaction to teamwork when a bunch of randoms queue up together, but for crying out loud you'd think people would develop some kind of cooperation when they share a common goal. You know, kinda like how we crawled out of the primordial mud and formed civilization?
At the risk of sounding super cliche here, there's no "I" in team. If you think you can 1v5 while the rest of your team jacks off in the base, by all means do so. I won't stop you. I'll just be off helping one of the other lanes who actually takes an interest in the well-being of their jungler.