Russia is, in fact, not enacting genocide on Ukrainians. It's carrying out an invasion which we can condemn, but calling every conflict a genocide is actually a form of genocide denial, because it minimizes the horrors of actual genocides.

If you want to see criticism of Russia in Hexbear (my main instance), yesterday there was a post asking for peoples' opinions on Putin. Here's mine so you can see how much we "love the Russian government". You may be surprised to see that most comments and upvotes are highly critical of the contemporary Russian government.
The source for the tens of thousands of Ukrainian children being abducted is, unsurprisingly, the Ukrainian government. The Russian government makes claims about Ethnic Russians being cleansed in Donbas and I don't take those accusations as true either, until confirmed by independent journalistic reports. You'd do well to do a more critical analysis of wartime propaganda by countries involved in wars. I've had this conversation before with several people, revisited the sources available, and there is no independent journalistic work proving tens of thousands of Ukrainian children being abducted.