Need to improve my build please

My level 93 character on the new metamorph league is my best character by far but it still feels like it is lacking.

I have 6k health
Max phys reduction at full endurance charges
And over capped res at max end charges
Immunity to poison and bleed

But I struggle with some bosses and enemies. Not sure why except for maybe chaos damage but it's hard to figure out because of the limited information this game gives.

I could try to min max my character and get a 6L but I feel like that wont really help that much.

If I could get some help I would greatly appreciate it.

Is your profile public or can you provide a POB link to your build?

Keep in mind 7 K life might seem a lot on some builds, but there are metamorphs who can deal around 30 K damage on a single attack. Most of them will deal a lot of poison / chaos damage, so going CI can work out for you (depending on your build).