They're using artillery and air you moron, which is what they have been doing ever since the beginning on Ukrop defenses, and would be attacks are destroyed by artillery also, there's easily hundreds of videos to back this up.
You keep spinning lies while you don't inform yourself on how the Russians fight, and you act like the Russians didn’t kick the shit out of Ukretards in Mariupol, Kherson, around Kharkov, Izum Severodonetsk, Lysychansk, and numerous other towns and locales, and not just forced them to retreat, but captured or destroyed most, encirclement after encirclement.