Help with first hardcore character

Hi all,

Recently Ive been completing all the achievements in game and at this point the only I have left are the hardcore ones. I never touched hardcore because Im a pretty terrible player regardless of the 1000hrs spent. Ive been following a boneshatter guide and by some miracle I was able to get to lvl 83 on my very first hardcore character. The only achievement I have left in game is to get lvl 90.

Dipping my toes deeper into yellow maps ive had a few scary moments and I wanted to reach out to see if I could get some feedback on how to make myself feel safer and get to lvl 90 without worry.

This is where Im at right now. My next step is Uber lab
https://pobb.in/iizH00YS125Y

This is the build ive been following
https://pobb.in/mBd6y9l9juJa

This has all been SSF because the trade on hardcore standard is nonexistent. buying upgrades from people is probably not likely and I dont have any resources anyway.

Any help is greatly appreciated!

there are many defensive layers and they range from easy to very difficult to manage in ssf

rings generally need to be amethyst bases - you need to cap chaos res

you need t2/t1 life rolls on almost all pieces

you need to use top tier bases

https://www.poewiki.net/wiki/Guide:Best_in_slot_base_types

you need eldritch implicits to move phys to an ele

%pdr on chest

giga armour on all pieces

you can send crimson ore/bars to nganaku for well rolled str pieces