The only things of significance Russia has achieved, if you call it that, is the loss of 50% of its best troops in the first moth of the war. And proving the RGF, Naval Infantry, VDV and VKF are hollow and poorly trained.
Russia is today winning. The Ukrainian Army is getting absolutely decimated. Their best forces, Azov Battalion have been routed and those that weren't killed are now Russian prisoners.
Since 2014 we have equipped the Ukrainian military with the best training and hardware that untold billions of dollars can buy. They are today a proxy NATO army and the Russians are learning everything they need to know about fighting against NATO tactics.
Today the Russian military is the most battle-hardened modern army in the world. Combat veteran American mercenaries are returning home with warnings that this was nothing like Iraq or Afghanistan. We haven't fought an enemy that wasn't wearing sandals since the Korean War.