Lost Warrior

So im pretty new to POE2, played alot of POE1 so im kinda just winging it in POE2, i have seen alot of builds very similar to this one but now with map bosses being in every map i cant clear any maps due to not being able to clear the boss and am stuck. Before the boss in every map patch i was just clearing maps casually cause that was fun to me but now all my surrounding maps are blocked due to not clearing the map boss. So ive tried switching to a two hander and different shield i saw on youtube to increase damage and armour but didnt work either. The problem is i just dont have damage to do anything at all against map bosses unless i want to fight for 15 min per boss but i cant due to dying in 1 hit. I also cant clear even Trial of Chaos of Sekmas to even get ascendancy points, i die on the second boss in ToC and first in ToS in like 1 hit. Any advice on what i can change would be pretty helpful or im pretty much just ending my journey here. Just for what ive tried ive got my armour up to 30k with max res and still 1 shot me, the current build im linking is like 28k armour, max res, 400+str 40k in armour applying to elemental damage

Builds ive tried on youtube are DEADRABBITS Thor Build, CCS Mjolinir Titan Build and Ulfs GIGA Speed Thor..the problem in seeing is all these guys can get all their skills to be min 15k up to like 50k dps on the skill window and i cant even get mine past 4k, ive actually dropped around 400 divs copying all the builds now almost gear for gear minus just a few stats maybe, ran all the skill trees all the same and has been no different than my build i was playing. Just looking for something im mising or maybe a whole different build?

https://mobalytics.gg/poe-2/profile/a741f3d3-56b8-422c-924d-5a905c86c23b/builds/f3225958-c5d5-449a-a905-de02c96b73fd

Dropped 400 div on gear and a build you don't understand and don't know how to play or adjust, while being so new you can't get a 3rd ascendancy or do map bosses?

Did The Miller drop you a mirror or are you just a Really Magnificent Trader?

Default attack on a well-rolled rare weapon is more than 4k DPS.

i got 2 passage of rite golden unique drops or whatever they are called..and i steam rolled the campaign in the build, didnt die at all but yea i mean 1-65 takes 1 day so its not like your gonna learn a ton about a character in 1 day, when i hit tier maps the build i was using in campaign couldnt even clear the first few waves of trash mobs, so i started down the rabbit hole of build guides, tried about 10 different builds and none of them worked..so then i just decided to start a cheap mjolner build i saw for a few div and whole bunch of crap gear just so i could get some levels since nothing seemed to work, but as i hit t15 maps/pinnacle bosses/ToC my damage is just crap still..thought my skill damage was low bc i bought cheap gear, so splurged and bought super high end gear and tweaked from there..the only difference from my character and what i linked is 1 level on lightning warp, but my confusion is how is 1 level a 40k dps difference..what i actually discovered is titan is just trash, ive made 2 other chars since, a monk and lich and beat all content already on a dirt cheap like 20 div budget..but anyway thanks for your zero valuable input like the rest of this toxic community