Hi, my name is BlazeFatility (Yes I spelled my name wrongly), I am a Master Yi main I play in SEA on the garena client, and for you guys asking if I play rank games or not the answer is no.

Pros

-Deal's tons of damage in the late game
-Great sustain in the jungle with his W
-Can dodge skill shots very easily with his Q
-Disable all slowing effects with his Ult

Cons

-Very Squishy when caught out of position
-Dies quickly to invades
-Bad gank potential without Ult

Start your Jungle route with the Krugs, then proceed to the Raptors then the wolf camp. You should not have used any of your potions because of your W. Then after your first back get yourself a hunter's Talisman and start off with your red buff then go to your blue buff. Then you can do whatever route you prefer and start looking for ganks

Now master Yi is not the best ganker because he has no CC (Crowd Control) if you are trying to gank a zed mid you should wait until he uses his W or wait for your team mate to CC them then close the gap with your Q (Alpha Strike), but if you want a more successful gank wait for them to burn their flash then gap close with your Q and finish them off if your damage is high enough, but if you don't want to risk it you can call it a win because your opponent has no flash. But if the mid laner for example like Annie for example has no escapes besides her passive so the must burn her flash if she wants to live. What I would see is that some master yi players just straight up gap close with his Q right away, yes it might do damage but if your opponent like a morgana stuns you under tower if the morgana is close enough to her tower then your gonna die or live but lose a lot of health.