No, because the US could fly them, (assumedly), but doesn't. Where my understanding is Russia can't keep their fleet maintained let alone produce more. You don't use gorilla air tactics and bomb civilian infrastructure if you have other options. Russia is smart enough to know the value of winning hearts and minds, but they don't. Why not? Because they can't is the only reasonable conclusion I've seen

I don't have access to perfect information, but I find the reports that Russia is unable to maintain their entire fleet creditable, and believe and/or trust the experts who confirm this analysis.

As far as I know the US military still has more 4gen jets than 5gen.

Obviously Russia has no 5gen at all (or just a few 5gen Su-57, if we going to name them 5gen).

Anyway, my point is that as of now Russia has no need for gen5 and can't afford it anyway, just like about anyone else except for the US and a few countries that have them but at the same time have to rely on the US anyway.