So u always start at Red Buff and call ur top boi for help or bot guys for better leash. than go for Raptors -> Wolfs -> Blue Buff -> Gromp, than check out that u see any gankable lains. From now on u r on ur own. farm a lot, tax ur laners if they r lows or u stayed too long to gank them.

BUT the most important thing that never stop farming or stay too long to gank. Even if ur laners are losing ur late game will kick all *** if u r fed as fck. u can 1v9 with Yi so just be confident in u and Yi and you will win every game.