Help with survival first time this far!

Evening everyone! This is the first time I've made it this far in any league and I think I've been doing an alright job following along guides and help with the community, but I'm struggling to stay alive most maps I'm getting consistently one shot, I may have put to much effort into my offense as I have had some good crafting success but I want to know how I can improve my defense without hampering my offense to much, I do need to fix my chaos res but I feel there are larger issues. Any advice is greatly appreciated

POB: https://maxroll.gg/poe/pob/7v1yhv03