Reverse Knockback Totem Ranger - totems get 1 shot

Based on the former idea with a different class:
https://www.pathofexile.com/forum/view-thread/1692403/page/1

Hello folks
I was playing around with one of my rangers in STD that got reset passives and thought about making some fun build with it.

I have taken a bit of a different approach on it, but the basics remain the same, Totems, Reversed Knockback.

The only issue I noticed so far is that my totems get ONE SHOT, with ranged attacks or the Righteous fire mobs found in Act 10. Or basicaly with anything that hits stronger than a mosquito O_o

My current passive tree I'm planing to do after 3.9 gets out:
https://poeplanner.com/ABMAAQkAEyIAAIGv6wHR_gknIZXIxKK74_66fXXTfu969qMVICzpAO4qTT8nSshuqmSEBqD5vbXyNZLYvf4Ktz6DzDwtxq4QzP6HeyD4k4NfhrMLYa9saPLwH6IAPd1nZ58no4oj9k2SlwYZisM6JIsPqxa_JpVh4lVLjDZ_K_iCO7rjsBKOMHxRR42_1CONfSLqMgGyGc96-WMEsXsU7g4tgxm0vqd1y-pizZiNfkMx2sF07QUtLlPTb3rvQKBeE9lgHmoCILTT7m-E72EhGlU26AHnFE0E5P-wddD8S7yfGJE6UjJ-ZU29Nr_VU7v8xQ2Nh3ZKfVuvFHWkwhPasQHpvfC7cUNl02lOU88AAAAAAA==

I'm currently at lvl 87, full resistances, +/- 4.5k life

Any ideas what might be wrong with the totems being so easily destroyed?
Oh, yes and one more thing, the dmg is duh... quite low, I can't imagine how they managed to run bosses with this build O_o
and I got even more powerfull passive skill tree than it was in the former build guide... O_o