@Miloslaw
Depends on which form of government will come after Putin, if it's Putins Club or liberal sellouts it will get worse. If it will be patriotic Russians who oppose both Liberals and Putin then Russia still have a chance to gain anything out of this conflict.
Russia most likely won't control Crimea and eastern Ukraine and it's status as a power will drop even further no matter who holds the reigns in Russia.
Conveniently it can be all blamed on Putin, then worked on in a good way after that.
If I were in Russia, I would have campaigned for Kaliningrad to be donated to me as a person property and using all the means being there to transform it from being a military outpost to a economical and diplomatical hub.
Economical in sense of opening groundbreaking educational organisations that would be taxed very lowly (max 10%)
Opening for tech to be developed with regard to money transfers, currency creation, app development, robotic technologies, beautiful art program for the sake of bringing more beauty and good to this world compared to all that has been done in this war (making a new turn).
Creating a diplomatical building with one part of the building dedicated to religious matters and another building dedicated to diplomatical matters regarding Slavic matters (Slavs as in people/nations/tribes etc, not paganism).
This would increase Russian influence among Slavic states in a good way.