spot what is wrong

Yi died.

he didn't feed the poro

Yi got killed by lucian

YI managed to die.

The wrong thing is that a (probably) fed yi died... That yi...

Yi did mostly true damage I guess is what you want us to look at?

you didn't cc him

Don't worry. True damage is a good mechanic to balance the game.

Someone was actually playing jungle in this horrible jungle meta.

Oh wait that was a laning Yi which is going to get nerfed due to bad jungle changes causing funneling to become more prevalent.