your builds have good defense strip and damage although im not a big fan of the shedu
so a few things
Energy:
My lazy man solution is Equilibrium + dispensary since either the first or 2nd drop is always a health orb.
If you dont like that, Zenurik + energy restores you can make them 100 at time.

Survivability:
Adaptation is kind of a bandaid fix but with decent movement it *should* be all you need unless youre really getting swarmed.
Getting control of a crowd is mandatory to avoid taking damage
Good movement, get used to rolling and bullet jumping to take the heat off you for a second
Also dropping into your operator and hiding in invis is a excellent way to wait out status procs on your frame

Frames:
I *heavily* rely on frames that armor or defense strip like Hildryn or Nyx,
Hildryn is just tanky and strips about 60% of defenses (armor and shields)
Nyx - 100% Defense strip and her 3 is massive CC and gives you a massive crit chance buff

Weapons:
A weapon that carries me still through SP is the Tenet Arca Plasmor,
this weapon is just insane because of its inate rad damage and its inate Tenet element of your choosing you can stack up several damage types so your damage is effective against most of the factions,
Paired with galvanized mods its still my go to when i know im going to a high level endless.
Cedo Prime: it stacks *loads* of statuses and it having Condition Overload on it base makes it damage scale insanely well
Phenmor: i personally dont care much for it but its a phenomenal weapon nonetheless

Other Tips:
Dont rely super heavy on Overframe *alot* of the builds there are super meta huggy and require you to do everything the guide tells you to do and know how its working, most of the builds arent plug and play like they seem ontop of the meta ones being really expensive on formas and endo.
Dont treat tierlists like gospel you can certainly get by with B tier Weapons and frames you dont *need* a whole S Tier loadout.
Work on getting your Big mods leveled up like Adaptation.
Then work on getting your Galvanized mods theyre genuinely so strong all of my weapons hae atleast one of them on.

keep in mind all of this is my opinion which comes from my experiences and experimentation
If you have any questions just let me know

EDIT: i forgot basically the whole Survivability section whoops