Molten strike help.

Hi I need some help with my build. So far i can do up to teir 9 bosses easily.
Teir 10-11 maps are good until i get to the bosses than I die to fast since sometimes i can get out of way of some mechanics. My Dps is still a little low, but with ancestrial call and gems i can get about 33 balls each swing or up to 22 if on a solo boss with correct positioning.. Witch overlaps mostly so tooltip wont show how many explasions a boss gets hit by.
I would like to know if any of you guys would offer up and suggestions on how to improve
my survival so i can do higher map teirs.
Here my PoB:
https://pastebin.com/u1AiJdsp

Thanks much ahead for advice that is given.

Sorry Had my old psatebin setup link this is the newest one


https://pastebin.com/7MZfGNvW