I mean socialism has and dose worked for millions of people. Imho The two main points of failure are imperialistic states like USSR and USA the second thing is authoritarian systems trying to force socialism (often it is just State-capitalism) on to the working class.

Most of the reason socialism didn't do well is because the United States overthrew socialist countries that elected socialism and replaced them with capitalist dictators.

Mercantlism.

Yes, it's considered "proto-Capitalism", but its very distinct from how Capitalism is implemented in most countries nowadays.

There are dozens of economic models and theories that mix ideas of capitalism and communism.

There's a lot of things you obviously aren't aware of. Socialism is very successful across the board. The thing is, you are conflating leninists, or state communism with all communism and socialism. Which is wrong. But expected of someone educated especially in the United States and possibly other Western countries.

It might even surprise you to learn that a large swath of communist and socialists are often anti-state. There are communes all over the world that have been running successfully for a long time. You don't hear much about them simply because there isn't much to radicalize people against them with. If anything you hear people ridiculing them but little else.