Expedition encounters - instant death?

Very frustrating and it's putting me off engaging with this content

Build is a l92 Thorns Warbringer all res maxxed, 2.2k life and ~82% armour. Delirium/Breach/Ritual are challenging for this build (e.g., Volatile plants on Rituals means a lot of dodging and not being able to use thorn-damage, Delirium rare mods can be quite hard)

However, Expeditions feel very unfair to the point of ignoring at l80+. I am getting hit with 90-95% life damage with these AoE circles which i dont even know what monster has cast and keeps casting. I just died 3 times instantly on one encounter that was insanely unfair. Given my res + armour, it makes ZERO sense for this damage to nuke like this.

Is there issues with some monsters being incorrectly overtuned for some damage? An example of this issue I have with corrupted coalescense monsters is the Ravenous Misshapen doing absurd damage as a white, quite plain monster.

Another issue if the damage tuning is correct per my above complaint, then this large scale damage is poorly telegraphed and animated. There should be some visible windup/colour/effects from the particular monster that is generating that damage. This is done well for most monsters, but frustratingly for small white monsters its not.

Again, I like challenge and thorns warbringer isn't some top tier stuff that I expect to clear areas like butter, but large damage should be clear and identifiable to give me a chance to react.

Any thoughts/shared sentiment? I don't believe it's unreasonable feedback. To forecast critique on the build, i understand the life is low here but i can do fine moving to avoid this... if I can reasonably prepare for it