Yes, I'd worked that out.
So in summary. You have nothing to add. You think that Putin should just tell his armies to pack up and go home and stop being nasty and he will then retire to his dacha by a Siberian lake and smoke kippers for the rest of his days. Unfortunately in the real world that is not going to happen, he has decided he wants to enlarge his country essentially trying re-establish a Russian super state surrounded with puppet states as a buffer against the evil machinations of NATO. Which he conveniently paints as an aggressive alliance to excuse his own aggression.
I'm sorry but you really do have no idea what you're talking about.
There is a historical case for Crimea being part of Russia, it was ceded to "The Ukraine" when both states were part of the USSR I believe simply to make administration easier. Ethnicity in the area is mixed and the countries have historically been allied for most of their existence, indeed many Russians and Ukrainians have linked if not intertwined families. The Donbas is more contentious, the conflict in the area was largely stirred up by Russia to excuse the annexation of the provinces. Any attempt to establish a people's wish would be very difficult now, Russia has moved a lot of Ukrainian loyalists out of the area and any attempt to poll the remaining population as to their allegiances would undoubtedly be subject to electoral intimidation and fraud.
I think the best hope for a lasting peace in the area is in defeat for the Russian army in Ukraine.