Gear is not an issue, think again of why you're failing before you whine.
Having the wrong movment is punishing in this expansion. Missing a buff or a debuff will 99% of the time kill your raid.
So you might need to actually understand the fights better before you try to group and smash the boss head and hope for the best!
Go read about the fight, make sure everyone in the raid understand their role and what they need to do when (x) ability is casted and when (y) ability is casted.
Lastly, if you want epics (work for it) don't complain about not being able to move or intrupt then cry about failing to kill the boss cause no one will feel sorry for you in the way you're trying to make us feel .