Keep it to yourself. If you dont want to do instances anymore, fine.
Who cares.
If you dont get enjoyment out of the game because you are not able to rely on other people a mmorpg is the wrong game to begin with.
Pls dont talk like you have never made a mistake in a dungeon and ALL the other players make so many mistakes that it puts you off. Sometimes you have a good run, sometimes a bad run. Thats just how it is with random people.