First thing when you JG think this in your head, "Fuck this team all the kills belong to me". DO NOT gank a dead lane unless you are sure you can kill the enemy laner or it's a collapse. A dead lane is where the teammate is officially worthless and you give up on them even contributing to the game. Like I recently had a game our Top lane was 0/5 at 8 minutes that is officially a dead lane, but I also had a game where the enemy tried to Gank me multiple times. It gave me double kills and or wasted the JG's time playing with him.
Help the lanes that can help themselves. If your bot lane is already 3/0 make the enemy adc regret his life choices in playing this game. So you clear your JG then gank mid and bot or go bot then mid.
Master Yi that is a Farm champion Ignore everyone on the map. unless you are 95% sure you can get a kill don't bother to gank. From what I am seeing you like to play the assassin type of JG. What you want to do is Find your clear path. Everyone has their own version on what they like to do. Like I play WW and my first clear is
Blue>gromp>wolves>red>baron skuttle> (maybe gank)>golems> Dragon skuttle>gromp>Wolves and then back.
First you need to work on your CS when you finally get a good grasp of that then you can start to add ganks into the list. Another thing when giving up the buffs unless you are like Amumu or some other non-damage JG. Never give up buffs unless they are doing better then you. If you are like 1/3 and the mid laner is 5/0 give them the blue if they use mana. If you are 6/1 and your adc is 1/7 smite that red buff fuck them.