There’s no other way this could’ve gone
Of course, it could have gone differently. Putin's mother could find a different lover and the world would look differently. Putin's mother is therefore one of the causes, just like the infinite amount of other factors.
What you're doing now is the equivalent of analyzing why a certain woman got raped. Factor 1, she's single, no husband to protect her, factor 2, she went to the club, factor 3 she wore a short skirt .... You're desperately trying to analyze the "factors" to shift the attention, and the blame from the rapist.
So could Ukraine not find other solutions to their present crises?
"So could the woman do something differently to avoid being raped?"
Again, victim blaming.
The Ukraine state has had it’s existence guaranteed by Russia so long as they concede defeat and allow the independence of the eastern separatists.
And the "de-nazification", de-militarization, ceding Kherson and Zaporozhija Oblast, no NATO or other protection. You end up with a rump state just like Czechoslovakia after Munich decree, helpless and ready to be re-invaded (March 1939).
