This is very easy. Ukraine is NOT Russia. Russia has no business in Ukraine. Russian speakers in Ukraine are NOT Russians in the same way South African English speakers are not UK subjects and French Canadians are not French.
They see things differently in that part of the world.... the kicker being a great many Afrikaners still see the SA English as indistinguishable from the UK English. You are not keeping up with what actual people think it seems.
Russia invaded Crimea, started and funded an illegal war in the Donbas. Last year they invaded the rest of Ukraine. Russia is to blame for ALL of this aggression. Excuses such as 'provocations' don't cut it because Russia was never threatened. Russia is a huge country with nuclear weapons and Ukraine was not a threat. Neither was the West putting nukes or forces in Ukraine. The West has not put any nukes in any of the former Warsaw Pact countries out of unnecessary respect for the smelly footwrap wearing aggressors in Russia.
Nukes are useless unless you can bring them to bear, so far this conflict has not become the kind where they are relevant yet. If you narrow it down to outright kinetic threats then yes those had not materialized yet.... however there are other threats that over the long term are just as deadly such as the strategy of slow strangulation. The West applied the exact same strategy on Apartheid SA and it almost destroyed the country.... so don't even try to pretend it's not powerful. Russia simply went kenetic while it was still strong before what was done to SA could be done to it. That's the thing with these guys, they learn from history.
Also.... you seem to not realize that no one cares what the UN thinks is illegal. The UN is not actually in charge of world government and cannot write international law.... thus there are no international crimes. International law is merely a set of interconnected treaties.... your problem here is because Ukraine did not keep to their side of their treaties with Russia.... that makes this law perfectly legal since Russia was not the first to break with law as it were.
This will hopefully change soon with nuclear sharing on the way as well. This will all be on Russia. As Russia is not able to live in peace with smaller countries because Russians think like 18th century imperialists. And you seem to be supporting this. Fine if Russia is excused to start wars of aggression, then everyone else is. It's going to be everyone going nuclear and invading everyone else. Because LOGICALLY AND RATIONALLY that is the consequence of this appeasement of Hitlerite Russia of 2022.
Unlike you, I am not supporting anything. I am merely seeing what led to this and what it's outcome will inevitably be.
The age of the corrupt and inept UN is over, Russia saw this and took advantage. We are back to where we were during the cold war with the UN not being able to actually achieve a single thing or note. All the soft power the UN had is unraveling and Russia is helping it happen.
No need to get emotional about it.