Not sure what to do.

[Arkista]

That's because of Yoshida. In all End Game content there is very little room for error, if you make the smallest mistake it can cause a wipe. No room for error, its either get good or GTFO. So don't blame yourself, keep playing.

[Gramul]

Seek respect only from those you respect.
If some random jackass is being a jerk, write them off. Their acidic critique is more a reflection of them than it is you. You can always find a new group.

[nuyu11]

That's why I like staying at Masamune v(^_^)v

My advice to OP is try play as a Tank, Pick PLD.
Ask your friends to accompany you for first time then you can solo....

[Whocareswhatmynameis]

My suggestion would to just jump on party finder and setup a learning group until your comfortable with that encounter. There is no expectation of performance in a learning group.

If the endgame stresses you out too much I would just not do it, and stick with things your comfortable with. DPS don;t usually get a lot of commendations people usually give them to tank, healer, or not at all. I usually try to give it to a random dps tho.