Dragoon positioning

[Rioszz]

i mean, the adds, especially in phase 3, use those aoe skills around them, and sometimes it makes me unable to get close to them, is there anything taht i can do with that?

There is no particulary reason as to why you shouldn't be able to get close to the adds as a dragoon. The adds itself have a couple aoe abilities they use, which may interupt you attacking it for a couple seconds, but other then that i don't see any reason why you wouldn't be able to.
As a DPS your mostly going to have to play in a dangerous position, in order to keep dpsing and dodging, this also improves your overal skill and knowledge of the actual fight!