What does California have in common with the Russia we're writing about here? Slums and poor neighborhoods exist and have always existed in every wealthy country and city.
There are wealthy cities: Moscow, St. Petersburg, where wealthy elites live, but these aren't even entire cities, but individual districts. The children and families of Russian oligarchs and politicians most often live and study in the West: London, Paris, Rome, etc. After all, in the war in Ukraine, there are none of peopoe of the wealthy from Moscow, only from poor provinces in Asia.
In any country, you can watch some video of a wealthy district in the capital. They could travel outside Moscow and record something, but the Russian authorities wouldn't allow it, as they'd be forced to show the truth about poverty in the country.
Btw, you hate the USA, why don't you read up on Cuba? Cuba was much richer before Castro's revolution, when the USA had significant influence there. Moreover, under Castro the percentage of political prisoners increased by a 10/15x. So it's not always the case that where the USA is, things are the worst.
The atmosphere in the French squad must be terrible, though, since Simon and Breisaz hate each other, and one steals the other's credit card during training camp. How can anyone function together in such a situation?