PoE Herald of Purity, Templar builds

I dropped an ashes and wanted to create my own build for a while. Went with totems as I never played before. Main focus of the build is getting crit chance for the impale from the gloves and stack auras. Didnt like the new helmet much (sandstorm visage) so not using it. Current damage is 25mil with 2.45k life (petrified blood) and 2.3k es (from Corrupted soul). Build is expensive as I grabbed grand spectrums from another build + ashes and bottled faith. Other than that it doesnt take much to start it up. Managed to kill uber shaper, 85 uber elder, uber eater and uber exarch, taking all port

So far I I copied most of this from some easily available SW Totem builds, which are way, way too expensive though. The goal for this is a sub 5d char that excels at sanctums Basic concepts: Full cold convert, hrimsorrow rn, later might go veiled mod 35% phys to cold 40% Mastery +?? Heatshiver go hiero, get battle mage from forbidden jewels (way cheaper than getting +1 totems as an inq, that alone is 10 d at least) Use marohi+astral projector Go crit, its convinient with the the skills/path, but maybe I should go nc with hiero? (No idea) Creeping frost Totem for chill Arc brand/ass M

I am like in dire need of help... I don't know what to improve on next honestly. I can farm T16 maps slowly, but I still do get 1 shotted lol. I've seen people running Hex Master on PoENinja and some people don't even run Vitality or Determination. Can't fit Vitality in at the moment. I prioritized Determination over Vitality. LMK what you think.. TIA. Link to my POB:

POB: The video is a T16 Dunes just alch n go. I couldn't decide on whether to start with shockwave totems or the hydrosphere Occultist so I decided to make a bad build that combines them both. Surprisingly, it has gotten me to endgame pretty smoothly and can take down pinnacle bosses. Uploading a video because a few people requested one. Edit: Note on a cool interaction, on-kill effects work with hydrosphere even though it's a totem build (bug?). At the cost of +1 totems from ancestral bond you can make it into a explosion build.