well most if not all this game is rng.
Tried 80+ runs at Ifrit HM for the Bow to drop, never did.
Ct was the same probably did around 80 runs to finally see and get the crimson hat for my blm.
Been trying atmas almost every night since 2.2 and only have 3 atm.
Atma drops belong in EX Primal battles i think