Need Help Optimizing My Chainhook Berserker Build

Hi everyone,

I'm currently running a Chainhook Berserker build(phys+bleed) and was hoping for some advice on how to optimize it further. I've been having a lot of fun with the playstyle, but I feel like there's room for improvement, especially in terms of survivability and damage output. Here are the details of my build so far:

Berserker: Ascendancy nodes Aspect of Carnage, Crave the Slaughter, Rite of Ruin (I used 4th to allocate a smaller Physical damage, critical chance and a physical damage, life leech node as I was originally running Resolute Technique)

Unique items: Currently running Rigwald's Savagery and Beltimber blade for weapons and a Wurm's Molt (mostly for sustain/mana)
(I am hoping to fit in a 6L Bronn's Lithe once I get the currency)

In terms of skills:

Chainhook (6L with melee Physical, Sadism Endurance Charge on Stun, Rupture and Multistrike)

Molten Shell CWDT
Crushing Fist with Expert Retaliation

Currently experimenting with a Tornado CoC with brutality

Leap Slam for mobility(currently with a faster attacks support)

Auras: Determination, Vitality(arrogance sup) and Herald of Purity(4L with Rupture, Chance to bleed and Fortify)

Current defensive stats are
3034 HP
5054 Armour
2600 ER
81% Fire res
81% Cold Res
82% Lightning Res
75% chaos res.

PoBb link: https://pobb.in/jo2Gq0n6mnE6

I know it's probably terrible but I was hoping with the melee changes this league that I'd be able to at least finish the Eater/Exarch fights with it so any help or advice would be greatly appreciated.

I know I need to work on the defensive layers but I'm a bit lost as to which and how, I figured armour would be the best choice for a strength class

Thanks for your help and for taking the time to read this.

May your div drops be plentiful.