[2020] No, THE absolute worst feeling in League is that of utter uselessness.

You do everything you can. You try your best at every single moment in the game. You want to win just as much, if not more than the rest of your team.

But you end up being nothing but dead weight.

Everything that could go wrong does. You try to do SOMETHING, but your Zhonyas doesn't go off, that assassin blows you up before your finger even moves to the flash button, you try to do damage but it feels like you're actually healing the other team.

Even though you are trying your absolute best, doing everything you possibly can do in your power to make an impact on the game, you leaving the game would probably not make any difference whatsoever, and it might actually help your team more than hinder it.

You're literally bashing your head against a wall, but you can't even scuff the paint off of it.

Its worse than losing, worse than going against a duo, worse than seeing the rest of your team fall apart. Not being able to impact the game in any significant way, despite doing everything you can to do so, is THE worst feeling in League.