Russia, Belarus, and Serbia

Might be despised because they are dictatorships...

1- They are not dictatorships
2- The West has dictatorships instead. Ukraine was supposed to have presidential elections this year, but Zelensky is trying hard to prevent them from happening. Trudeau has been trying hard to remove freedom of religion from Canada, because Christianity does not fit with his liberal fascist ideas. And even in the USA, Biden and the Democrats are doing all they can to prevent Trump from running in the elections, or to try to cancel them altogether. I don't know what CIA Nazi stuff you've been listening to.

How does Putin stay in power for six terms? How does Lukenshenko stay in power since basically Belarusian independence? Why did Obama step down in 2016?

Obama already served two terms, and couldn't serve another one even if he wanted to.

And as for Putin, over 80% of people voted for him. And if you say it was rigged, then why do so many Russians support Putin if you claim that 'no one voted for him?' The population supports him, which shows that they did vote for him.

And with your logic, FDR was a dictator because he served 4 terms (16 years) until his death. If he didn't die, he might have even served a fifth term.

Constitution

Well, constitution is one thing. Those 3 nations have one too. I'm just saying that the USA is also very highly corrupt.