In what way did Ukraine and the west threaten Russia? What bad thing do you believe would have happened to Russia if they hadn’t decided to invade and destroy big parts of Ukraine? It’s difficult for me to imagine that they had no other choice.
And yeah sure it's also about money as well, Ukrainians compare the situation in Poland and Romania with the situation in Russia and Belarus. Let's say that all the Russian propaganda in the world means nothing against such a wealth gap.
Ukrainians don't want to stay poor in Russia's influence the same way that the rest of eastern europe didn't as well.