The USSR was a flawed form of Socialism, but was fundamentally Socialist. The majority of the economy was run by Worker Soviets, in a process called Soviet Democracy. The Politburo, ie the highest Soviet, had a massive amount of influence and power, but day to day decisions were made locally. I would agree, I don’t think it was a particularly good form of Socialism, but I would still consider it Socialist.
Modern Russia is absolutely Capitalist at its core, that’s the entire foundation of the Russian Federation. The Capitalists are the Oligarchs! The Inner Circle are Capitalists! just because it’s a higher stage of Capitalism doesn’t mean it ceases to be Capitalism.