Biggest advice i can give to a jungler is
to use pings correctly. On the way ping for a gank, target ping for who you're gonna focus, assistance ping when you aer getting chased/dove, assistance ping for objectives, v-pings for when a gank is imminent and you're not gonna be there, danger ping if you decide you're not gonna gank or do an objective after pinging it earlier.
Using your pings correctly can win you games.