Strength stacking build sucks ?

Is Str stacking build sucks ? Or is this game designed for the top 1% ? I have all my gears with T1 Strength and i cant even do shaper i even struggle to do guardians map. Yet all Chris Wilson said game is too Easy is he out of touch with this game ? Oh maybe i should get belt/ rings/Amulets to be synthesize for % Str T1 Str as well as resistance for a low price of 20ex per piece ? But isn't that for min/maxing ? I mean why would i spend such amount of currency on a build that doesn't scale damage well and have shitty clear speed

So Am i doing something wrong or is this build just BAD ?
This is my

POB https://pastebin.com/fY2F24e6

My Profile : https://www.pathofexile.com/account/view-profile/SingaporeExiles/characters

Character name Mr_Flacid

str builds are fine, I got 100% non-meta one in Expedition, with mediocre budget and dont have any issues

Youd have to be more specific about what exactly you are struggling with.. for example shaper is purely mechanical fight, defenses are mostly irrelevant unless you have crazy ones because you still have to manually avoid most of his actions. This fight does not require very high dps either,so..

Frankly, your build sucks.

First, STR stackers don't really start scaling well until you get some stuff you don't have yet, like well placed pair of Split Personality jewels in a cluster, rares with % increased strength implicit, Brawn jewel...

Second, your passives are a mess. You've got four points absolutely thrown away in Blacksmith's Clout, the whole dangling line toward Art of the Gladiator could be better used elsewhere, and you've taken Unstoppable while you definitely should have taken Unrelenting.

You're using Boneshatter but you're not doing enough to reduce physical damage you're taking, both from it and other means. Unrelenting that I mentioned before helps, you can easily raise your block from passives, and when you overhaul your passives, see if you can get Steadfast or Rampart.

And there are more...the best advice I can give you is to take a look at some other STR stacking builds and take inspiration from them.

Strength stacking builds scale well but require lots of specific gear.

Late endgame is about min/maxing.
You need good cluster jewels, rare gear, quality your gems/gear, better Annoitment etc (better check similar builds on poe.ninja to have an idea).