As Andrii Biletskyi, the commander of the 3rd Assault Brigade, said, Russian forces have become more powerful in the field of radio-electronic warfare and drones and have plenty of high-quality artillery, but the regular ground forces of the Russian Federation are actually an obsolete component.
He also says the areas that stay off the front lines, such as artillery and drone pilots and electronic warfare, are improving, but we know that to win (at least without chemical, biological or nuclear warfare) the Russians will need frontline infantry to press the attack and hold territory. The question then becomes whether Russia can continue to find enough bodies to throw into the meat grinder.