Im a level 44 swordsman atm and i just got my ssj buff, i was asking what do i do to get more ep ? i saw many at my level with like 1 or close to 2k more EP then me somehow. I want to substain super saiyan also.

If it wasn't a class difference the result was likely due to a difference in equipment. Effects that increase max EP can be found in Armour (jacket + pants), rings or scouter chips. Have a look at the AH for equipment with bonuses to max EP. To sustain SSJ you need to look into EP regeneration.