Boneshatter jugg starter beginner question

Hi, I haven been playing POE for a while but never dived too deep into the game.

This league I looked up some boneshatter jugg builds and decided to try that for the first time.

my build: https://pobb.in/19g9h80Djjs3

I have a few problems/questions with the build and wondering if someone can help me with it.

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1, Damage: I seem to be clearing maps alright, but I think with the league mechanics, some rares and uniques do take a while to kill. Outside of making boneshatter 6L and get a better weapon, is there any other things I can improve my output? (either cheap or expensive ways). It seems like it just hit a ceiling without making some big changes

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2. Divine shield +corrupted soul: I am testing out the divine shield and corrupted soul. I am not exactly sure if this combo is worth it just yet, anyone can give some insight?

3. survivability: I know my hp is 3.5k, and I am aiming to get it to 4k. outside of that, getting the 4th ascendancy is on the plan. I do find myself getting 1 shot a lot. Is there any defensive layer that I am missing in my buuild? I have got the CWDT set up, and the auras.

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Thanks! Any boneshatter tips are welcome, too!

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