I need a top laner or maybe a Jungler

My main lane is mid and Im pretty much only spamming Viktor with some good success. My backup are Velkoz, Syndra but i have nowhere near the experience on them that I have on Viktor wich thankfully rarely get picked or banned.

My problem is when I dont get mid lane. I used to jg using mainly volibear because hes simple and tanky but I dont actually enjoy him that much and recently not doing that good in jg. So im thinking about new champ and/or switching my second role to top lane. That said im not really a toplaner, I have tried a few times with olaf, jarvan but I was thinking maybe a more caster ish top laner might be more suited for me ? any recommendation / tip for top lane? Or what about some Jungler that are fun and effective. I was thinking maybe Zac cause he always seem effective when I see one.

Brief background. This is my 1st real season but played here and there since season 4. I started Bronze 5 and climbed going solo only to silver 2 spamming viktor mid and voli/jarvan in jg. My game knowledge is way better then my execution so not something too complex prolly better.

thanks !