hello i made build whitch should be suitable for almost everything, but my outcome is on the other side

I did blade blast inquisitor from Big ducks and dont know what is wrong, it is not like unplayable but i die all the time and boss damage on higher tiers is not so great on my setup
if you cound help me and say what should i change or do to be better i would be happy if it will help.
My char is JebemTiEgrese:
https://www.pathofexile.com/account/view-profile/Koloman14110/characters

and i dont have so much stuff but i heard i can have about 20-30M dmg with vulconus, but i do so little damage to bosses.... (probably somethink in tree or i am wearing something wrong? dont know plz help)

Ty for all the helpful responses