I think I could be having a negative impact on our Ukrainian users so I'll refrain from addressing everything you've said. But I wanna address your initial argument.
I agree that a country has every possible right to make its own decisions and it's not wrong by a metric. Ukraine has every right to make its own decisions too and Russia has no business getting involved. I even backed Ukraine's decision to join the EU's side in one of my earlier posts. But the thing is, Russia doesn't care about being correct. So it's not a matter of being wrong or right.
A mad man is roaming your street shouting he'd kill you if you step outside... Would you go out and confront him knowing full well that you're gonna get murdered? Obviously, it's not your fault that he's messed up in the head, and you have every possible right to go outside and walk across the road: You're right and he's wrong. But no person with a half-working brain would go out and stand before him because staying alive is more important than being right.
Ukraine did a similar thing with Russia and is facing the consequences. They made some bad choices but they did nothing wrong and they absolutely don't deserve what they're getting rn.
I rest my case with this as I don't wish to offend those who're affected by the ongoing events.