Why Duty finder queue so 30min for EX?

[Arillyn]

I tried as DPS and TANK queus SHB's EX bosses for my first time. Same 30min+ queue
First try queue The Dancing Plague.

I knew try join party finder. But, every players put "duty complete"
Cant join them.

Most people use PF for EX fights, probably why it's such a long wait for DF. If you haven't completed it yet and are still learning and no PFs are up like that right now, you can try setting your own up and just put learning part in the description. Lots of ppl will often join those that need it and oftentimes people who already know the fight will join just to help out.