u/Gus-Bus-03

Hey guys, I’m new to LoL and looked at the roster once and decided I was only going to play Jayce (unless a ban tells me otherwise) I’ve gone through my vs ai games and am now playing against actual people, it’s gone pretty well, but i either dominate top lane or get rolled, i can hold my own against characters like Mord but really struggle bad against a Heimer who plays ranged well, his turrets punish my overextension easily and break apart my minions before I can even kill a couple of his. Any tips or things i should immediately focus on getting better at? I just use the build from U GG