Teach Me How To J4

First of all, let me go over why I have difficulty with him.

Where does his damage come from? He doesn't seem auto-attack reliant purely from my experience playing him. Maybe I'm building him wrong, but from what I can tell his first AA does a decent chunk but that's it. If he has enough AD to do decent damage with his autos, he's super squishy. If he's tanky, he does no damage with his autos.

If he's not AA reliant, he must have some combos, right? Not really. E>Q. That's it. You stab someone with a weak little flag, then dash through them. If you build a ton of AD, sure, this could work. You dash through them and do a ton of damage, a couple autos, maybe an ult, but by the time you kill one person (or even before that) you're dead. However, if you build tanky, you do no damage. Is his base damage low or...? And if you miss that combo, you have to wait 7-8 seconds early game to have any sizeable damage output. If you don't kill someone with that combo, you're a sitting duck until it's up again.

The only option left is a utility tank. Do you just build him tanky, knock up some people, and hold them down for other people to do the damage? Someone please clarify, from what people say he's quite strong but I've yet to see it.