PoE Purifying Flame, Witch, Movement builds

first time doing COC cant figure out whats wrong with my build when I'm fighting single enemies/bosses feels like im either never hitting or never hitting crits, on pob says my main hand accuracy is 100% and my crit is 100%. any help majorly appreciate.

I've been running Frostblink Ignite this league, using Dissolution of the Flesh. I've done some testing this weekend, and wanted to make a note of a couple of cool features of the jewel. POB: 1) Petrified Blood caps you at low life, and converts a portion of damage you take from hits into life loss over time. This life loss over time is not itself damage, and it turns out that PB's damage modifier happens before Dissolution's. The end result is that when you take a hit, only 60% of the damage is reserved as life, while the oth