I've never seen Flames of Truth...
wow.
I need to do the Aery for the story, but I'm starting to be scared it might be difficult or end up with a bad party.
Thankfully, my brother (who already finished the story and started farming gears) is willing to help me and I already know all the strats, so I'm really just having social anxiety.
I learned this by facing T6 not too long ago in duty finder. Just go in and do your best. If even remotely know your job, whether or not you're perfect on a strat, people wont try to just completely tear you down. And being a brand new dungeon from a fresh expansion, just go in and learn from the bottom up.
Everyone, even pros at coil, extreme primals, and most likely within Alexander, had to start somewhere and actually learn fights / come up with strategies. I've been around since alpha 1.0, even XI, and never had that issue until hearing and seeing people start complaining about randoms in coil. The thing is, there are alot of people that dont really know how to play whatever job they chose, but there are also alot who do have a grasp on their skills and role...just might not plow through content as fast as others. Have faith in your abilities...the fun in any RPG worth its salt is encountering a difficult challenge and then surpassing it.
If you fail, ask questions, think about what caused you and your team to fail, and then circumvent that the next go around.