Putin doesn't want to annex Ukraine. He never has and he never will. Occupation of Ukraine is not now, never was, and never will be one of the goals of what he calls the Special Military Operation. His fundamental demands are the same as those he laid out at the beginning of the war. They haven't changed and they never will.
For the rest of your post, we've discussed it before. I am not "okay" with what Russia has done. I simply have a spooky kind of talent that sets me apart from 95% of Westerners when it comes to this war, it's called "the ability to face reality". I think it's because I'm old enough to remember the last time a war was this propagandised and ideologised, it was the invasion of Iraq, and I vividly remember the political technology used back then to weaponise emotion and strip populations of any semblance of critical thinking ability. "Saddam can nuke us in 45 minutes!" was this war's "Putin will roll across all of Europe if he wins in Ukraine!" "Saddam's sons feed the children of his enemies to dogs as he laughs" was this war's "Russian orcs anally rape toddlers to death" (which was the bulk of the tweets from Twitter non-entities that GlastonSpur spammed this forum with in the first month of this war, and woe betide anyone who dared question their validity because you were "SYMPATHISING WITH CHILD RAPE!"). Everything had to be kept at the level of a cartoonish depiction of ultimate good vs absolute evil and if you so much as dared to bring a modicum of nuance to the discussion, you were dismissed as a terrorist-sympathiser, which was this war's "Kremlin bot" (which I still get called by a few of the rabid hyenas on here). Case in point, the guy who set up this forum's 'geopolitics' thread was one of the smartest people on this site, in particular in the early pages of this thread, but he eventually got chased off by the #slavaukraini brigade, as in fact I almost did when literal death wishes started getting PMed to me by the "freedom and democracy" crowd for the crime of peacefully expressing an opinion different to theirs.
It's tiring repeating it all but I'll do it once more. The moment NATO and Biden categorically ruled out the possibility of ever directly fighting alongside the Ukrainians (despite their idiotic claim that it was an "existential war for our own freedom") was the moment Ukraine lost this war, and it happened around 45 minutes after the first Russian tanks rolled across the border. Ukraine cannot win this war with the resources the West has been giving it. They can only just about survive until there are no more Ukrainian men to bleed out. They also can't win so long as all those countries who "don't matter" according to Raoul refuse to vassalise themselves to US interests, as Europe, Japan and South Korea have done. Ukraine can't win. So what should the West do now? Apologise to Ukraine for what you've done to them. Putin is why Ukraine was invaded. The West is why Ukraine has lost. You* should have either given them what they needed to win the war or else stopped stringing them along.
(*'You' here doesn't mean literally you, AA, I'm 'addressing' the West since you asked me what they should do).