I don't negate the usefulness of military alliances themselves. NATO is a military alliance that was meant to counteract possible Soviet aggression and now is aimed directly at Russia and is used to antagonize Russia. They got scope-creeped hard after dissolution of USSR, because they suddenly achieved they (un)stated objective and were, in fact, obsolete. So they reinvented themselves from a purely defensive alliance to America's meddlers.
Ukraine should not antagonize its bigger and stronger neighbor at the behest of foreign interests, which is exactly what happened in this case. They got played and share part of the blame.
Fundamentally, I think the issue emerged from three points:
1. NATO did not dismantle Russia after the Cold War, nor did they work with Russia to solve the issues of the 90s. Instead, they chose to leave Russians to endure the worst of shock-capitalism while expanding into the former Warsaw Pact zone. Combined with the NATO involvement in Yugoslavia (which was a wakeup call), that ultimately left room for a resurgent Russia that sees a clear threat from the West, and which views the political events in its neighboring countries (i.e. the color revolutions) with suspicions of subterfuge.
2. Western inability to understand Russian culture and its political peculiarities, while treating it as a failed state stuck in the Soviet era. As such, many Russians eventually began to see the West as an antagonist, and a strongman who would 'Make Russia Great Again' was from that point on inevitable. I suspect the whole Fukuyama-esque End of History concepts played into this, where a completely Westernized Eastern Europe was seen as inevitable, and Western Democracy as the 'best' form of government/culture.
The cascading failures of American culture & politics from the 2000s onwards has given impetus for a cultural disconnection from the rest of Europe + some relatively improved economic conditions + a resurgence in state-sponsored 'traditional' culture/religion as a buffer- resulting in many Russians no longer seeing themselves entirely as culturally European (i.e. considering the West as becoming effeminate and in decline).
3. Russia's current geography works to its disadvantage, and its European moves are both a combination of Soviet irredentism (i.e. reclaiming territory given away by the Soviets) & are aimed at resolving its long-standing border issues and finding better natural boundaries. The Baltics in NATO (let alone an Ukraine) fundamentally gives the US a straight path to Moscow, hence Russian moves to secure assets and trigger frozen wars to prevent ascention.
(Obviously this image is intentionally provocative, but even a border at the Dnieper is far better than the current borders. On top of that, the collapse of the Soviet order left millions of Russians outside Russia, which adds an additional cultural element to this as well).
I've heard people describe the democrats as alpha. They are not alpha, they are desperate and desperate people are the most dangerous. So America first needs to get cracking and shore up them voting laws. They do that then the 2022 midterms sorts itself out.
Yeah, I don't see them as alphas, I see them as snakes who would gladly bite their friends if it meant getting ahead (and how this happens so often).
Unfortunately, history has its fair share of snakes who have gotten away with some pretty nasty things, to the detriment of their countries and citizens.