Jungling at my level is nearly impossible along with laning.

One game I shit stomp a brand new level 5 player the next im fighting a plat smurf who 22-0s me. I try jungle one game they keep invading and basically inting me and the next they sit in the brush smiting my buffs bringing teammates and securing objectives before 5 minutest its super hard to play consistently and learn because of the variety I just want some consistent gamepaly to grow better against and to get good.