This is not a cut and dry, "Russia bad!! Russia invade!!". Some people in those contested regions welcomed Russia as protectors against Ukraine extremist aggressors.
As an American I have no skin in this fight and nor should I, this is a conflict for Ukraine and Russia to sort out hopefully through diplomacy. Russia has been a world power for decades post USSR fall and clearly have not been on a megalomaniacal quest for world domination. I see no reason to assume they want to start another world war.
indeed, as soon as russia abandoned the former, diplomacy, and resorted to the latter, force, they lost all benefit of the doubt and all rights to anything they wanted
and that's to say nothing of the fact that russian soldiers rape, torture, and murder men, women, and children in areas of Ukraine they control, so ceding control means allowing that to happen, which obviously means it wouldn't actually lead to peace, because who would be peaceful sacrificing THEIR friends, family, and countrypeople to that? You?