Trump doesn't care? He stopped the senseless war-spending in Ukraine. He gave mr.Z the opportunity to keep weapons flowing for resources - US interest first. Z botched it spectacularly, because he is not a serious politician - he so accustomed to every EU leader agreeing with him on everything that he actually thought he can scrutinize Trumps peace plan.
And to what end does he keep fighting? Keeping the war going will only result in Russia grabbing more land. Looking back the best choice would have been to surrender at the start of the war. Ukraine would have a pro-Russia government, but regionally intact and millions of people would still live + EU would be much better off economically. Instead EU is now struggling and BRICS is on the rise.
As for Putin... he is what he is. Ukraine war was predicted a long time ago (30y+) and no one in the west took those warnings seriously.