Russia is heading for an outright defeat in Ukraine. Russian planning was incompetent, based on a flawed assumption that Ukrainians were favorable to Russia and that their military would collapse immediately following an invasion. Russian soldiers were evidently carrying dress uniforms for their victory parade in Kyiv rather than extra ammo and rations. Putin at this point has committed the bulk of his entire military to this operation—there are no vast reserves of forces he can call up to add to the battle. Russian troops are stuck outside various Ukrainian cities where they face huge supply problems and constant Ukrainian attacks.
Putin will not survive the defeat of his army. He gets support because he is perceived to be a strongman; what does he have to offer once he demonstrates incompetence and is stripped of his coercive power?