Help with build

This is my POB:- https://pobb.in/ESIFI8PAKXgG

I am dealing the damage I like/want but I can't take a hit - I don't know what to change/where/how/to what....

Anyone help? I'm a "good" player but I try.

Any pointers/help would be appreciated greatly

I believe you've mistaken molten shell with molten strike....