Molten Strike of the Zenith Juggernaut Help

I've spent around 20d on this build, I'm farming incursions with delirium mirrors to get the most out of my maps, but I'm having some trouble even getting through t16 4 mod without dying multiple times. I know there are multiple improvements I can make to my build technically, but it's difficult to cap my res AND get the things I need that are making me die right now. I'm using this guide https://www.youtube.com/watch?v=xE7keXeUiag working up to the 30d budget version. Maybe I'm missing something here that I'm not understanding?
This is my current pob: https://pobb.in/LwG4WqQPbC74.

Any help would be so much appreciated, I'm a bit of a noob, but I'm really enjoying playing this build and I want to at least get my voidstones this league. Thanks!