besides evading other has mentioned, in this particular case you’re playing an arcanist, but
these actually in most cases make sunder relatively trivial for Arcanist builds, as you you can either just tank the dmg for debuff with Mirror, or you can combo it with Nulli to then quicky remove the debuff
but, other classes can also often tank it with either out statting or layered defences, however
GT says you’re pretty far from 80 on some on Ultimate?
*i know ingame rolls can vary a bit but it’s quite a lot even for that
-and you want 80 res on all but phys
For a personal preference you also wear a couple too low level items, almost 30 levels under char, which means lower combined stats. Lack of choice greenery can also attribute to this(particularly MIs)
Devotions are very greedy when your item stats don’t compensate for pure dmg devo focus, and could be a prime option to beef things up.
Druid can overall become incredibly tanky, without ending up zdps, including during levelling, specially with stuff like layered heal procs and specially regen bonus.
Bounty system is best used if cheesing specific high rep reward bounties, res of them are generally not worth the effort, and should be done on Ult for max rep reward (and ofc preferably with a Writ or even Mandate already applied)
to assist with this, since the default system is less than courteous, Ceno made a fantastic thing that let us pick those bounties we want and not have to reset after just 5 either [Mod] [Release] Bounties Unlocked - #9 by DenisMashutikov - if you follow Denis’s “install” instructions(plop the file in settings folder instead) then it works like a tool/you don’t have to play it like an actual mod in custom mode
*then the best bounty to pick from factions are Relic crafting bounties, aside from that it’s usually boss killing bounties you wanna cycle
Build/dmg optimization wise you can strip some points of Wind Devil main node and put in buff/support passives, or even max trozan for dmg greed, and you likely don’t want or even need Olextra at this point (your other skills will do more dmg or yield better support, and you don’t lack trash clear dmg with trozan/devils)