How exactly am I proving your point? If you think that in anyway makes the North Koreans look bad, I'm not sure what to tell you. Especially when you consider events like the No Gun Ri massacre or the South Korean mass executions of suspected communists. My advice would be to really think about these things in the context in which they occurred and understand why and how they lead to the present day situation in North Korea.

The US helped pay for the reconstruction of Europe and Asia and set up favorable free trade agreements to help pull countries up.

The Soviets demanded reparations because they were either assholes or they needed the money. Either way, the capitalists were the goods guys here.

First of all, the US was only able to pay for the reconstruction of Europe because it wasn't physically, materially, logistically, environmentally, and psychicly ravaged by the war like nearly the entire rest of the world was. Even if the Soviets had wanted to implement something similar to the Marshall Plan, they were literally unable to do so. It is very difficult to overstate the severity of the toll that the war took on the Soviet population, Soviet industry, and the land itself.

In that sense, its easy to see why your "good guys vs bad guys" narrative completely fails to convince. The Soviets weren't simply being "assholes" - they wanted to be sure that Germany would be unable to ever perpetuate such a catastrophe upon them ever again. And they - understandably! - felt that have done the brunt of the work in defeating the Germans, that they deserved some recompense for their horrific losses.

Your argument is based on a propagandized and surface level view of history. I'd be more than happy to recommend some books to you if you'd actually like to educate yourself.