Is it possible to achieve more damage with my current crit ?

So my crit is 2168%, and cultist is my main unit . 1.4 B is the highest i damage i could get.Even though i play a lot of games.. could i achieve more damage since my cultist is at max lvl or i should get my crit higher to achieve higher damage ?

So my crit is 2168%, and cultist is my main unit . 1.4 B is the highest i damage i could get.Even though i play a lot of games.. could i achieve more damage since my cultist is at max lvl or i should get my crit higher to achieve higher damage ?