Question Bout The JG

Well honestly, according to scrap computer, you need a good attitude (not saying you have a bad one). IMO hard carries like yi (if he gets fed there's so stopping him lol) and other champions like that are good choices. Btw don't expect too much of your teammates.

Diana is pretty feast or famine, not much burst when unfed.

Diana jg is good when she's fed, but pretty team reliant when it comes to laning phase.

Someone I recommend is khazix who can do a lot of damage and burst, once your level 16 you should be doing a ton of damage.