Perception is reality, meaning that both sides probably feed their own people with false news. Now, I don't know everything, but from what I understand, NATO's persistence in expanding eastwards is in violation of the Minsc peace agreements between NATO and Russia, which has made Putin mad. At the same time, the West is trying to provoke China in their immediate maritime surroundings. Keep in mind that the USA has basically spread its military bases all over the globe and is already encircling Russia and China.
In addition, the western news media hasn't been truthful in their reporting about any wars in recent years. For example, "The West had to invade the Middle East to find Bin Laden", "Saddam had weapons of mass destruction" and "Gaddafi was a vile man who killed his own people". Not everything is completely untrue, of course, but people who live in the West are a part of a narrative, just as the people who live in Russia or China are part of their own narrative. We can't keep being blind to the expansionist imperialism any longer.
On the other hand, if there is a large-scale war and Russia and China win, they may act exactly like the West has done thus far. Those who live will get to see how it pans out. I have a gut feeling that one or both sides in this conflict in Europe will destroy the Ukraine with nukes, so as to create an uninhabitable zone, as a wedge, between the two powers.