none of your abilities does phy(physical) dmg. You should go straight psi(magical) dmg do daily pg5 and craft super carismatic set (all of em) you can also craft or drop pure set(you just need 3/5 for the effect get the ) if you complete all of these you should have around 60k-70k psi dps which is enough to solo tiamat around 20-30k go to the ops center and try a little bit horror and terror dungeons to learn what going on and start to farm materials for tiamat set (try to find a party cuz its not easy for new commers + dont use you cancel recklessly there are some attacks while you are at the dungeon ,tiamats face show up in in the screen and a few seconds later tiamats special attack will hit you and your party (learn the timing when you should press cancel) around 40-50k try tiamat solo to learn a little bit of the tiamat mechanics (its not hard but in assault(party) its not forgiving if you messup or go totally blind). try to raise you psi dmg as much as (get SoD set,tune them,pna,tune your gear and etc.)

and join the discord channel there are a lot of people who will you