Here is a half-formed thought.
Russia’s leadership (not just Putin, but various other power-holders, including at least some oligarchs) may actually welcome sanctions, and Western sanctions, far from being undesirable, were in fact the intended outcome of this war. Here’s how this works: these past 30 years, since the fall of the Soviet Union, Russia has been a net exporter of capital. This is due to multiple reasons, but in essence businesses (both Russian and foreign) extract things and ultimately remove the capital. Putin & Co. cannot directly force Russian business to not export capital. The war and the imposed sanctions make the West do the work, and take the blame. This can help Russia to fulfill the autarchist (anti-globalist) fantasies commonly held by fascist-leaning thinkers of all stripes.