@Herrgast I get you. Nobody likes to be on the receiving end of a stereotype. But alas, that's how pop culture is: catering to the main audience, and going all in on confirmation bias to please the crowds.
If you're talking about the Russians, Russia is portrayed as either a failed communist backwater state, or as a free-for-all basket case after the Iron Curtain collapse, teeming with all sorts of criminals and lowlives.
If it's the US, they're portrayed as heartless, inflexible, power-crazy, trigger-happy warmongers in many Japanese manga (the ones that aren't going with the "US is the the best!" routine).
I also remember reading an Indonesian webtoon in which a Japanese scientist was depicted as a cold-hearted man who cared nothing about his daughter's death so long as he could control some alien technology.
And let's not even begin on how Latin Americans, or even South Europeans like Spaniards and Italians, are depicted.
This is so acute that when a webtoon author decided to defy stereotypes and make a black character the King of a fantasy world, and a clever one at that, surrounded by greedy white nobles, some commenters couldn't disguise their shock.
Such is life, alas.