Since everyone else has given their views on what equals New/Bad, I guess I'll have a turn...

If it's my first time in a Dungeon/Raid, if I mess up and die more than once, I'll apologize and admit to being the "Noob," maybe even ask what I did wrong (if mechanics and not AOE).

If I'm on an unfamiliar class or using a different hotbar (PS4 user), I'll practise before doing any group content (besides Fates).

If I'm sick or tired, I'll just stick to Solo/World Content, if I play at all.

It's not hard to take some responsibility for your own actions, is it?

As for being called "Bad," all I'll say is that without clarification, it just means "Not as Good as me," which like "Bad" as a comment, is subjective as hell.