You can't comprehend Russia with western logic, but you can search for patterns in historical actions under Putin.
Russia wants to keep it's power by force in it's self claimed sphere of influence in old Soviet countries.
That motivation for military intervention for influence is widely documented through the similarities in Russia's last 25 military interventions since 1991 - https://www.rand.org/pubs/research_reports/RRA444-3.html .
Additionally, gas was found in Crimea which would make moving away from Russian gas much easier and they tried to reference the invasion of Ukraine to the decline of the west. Russia ( or better: Putin) obviously still lives in the USSR past, which collapsed without any military action of the west.
The invasion of Ukraine has as much to do with NATO as the invasion of Chechen and Servia had to do with NATO. The only thing NATO caused was they waited longer to actually invade and tried a gray zone invasion first ( without much success), but NATO is not the reason for invasion.
Russia's self claimed sphere of influence is, while they are losing influence constantly, just look at their military interventions in their CSTO allies. Even Orban isn't yelling to loud about preferring Russia over EU countries, although he would want to.
Post soviet countries aren't getting invaded by NATO and annexed by force. They are choosing to move away from Russia and choosing for closer ties with western countries.