Why is my ES damage so low?

12-31k damage

shako, authority, spirit shield, eth cv insight, +3 eldritch ammy rest is mf pieces. I have cta

Bound fanata cursed hephasto

That is without might merc and I'm not consuming any minion I'm running 2 defilers for cows trying to get hrs

No WL torch and no anni (playing SP)

I want to swap to vipermagi when I find one and of course arachs when I find that but why is my damage so low right now? I'm level 90 and did every quests so I'm not missing skill points