In my opinion, the Russian economy will not collapse due to the imposition of Western sanctions.
However, Russia is threatened with the "archaization" of the economy.
At the same time, cars, trains, planes, and trains were produced in the USSR. All this functioned without the use of modern electronics. The Russians have the opportunity to gradually restore their heavy industry and even machine tool building. The economy will function.
However, in the field of microelectronics and modern technologies, Russia are hopelessly behind the countries of the Western world.
Of course, in Russia they can strain themselves, restore the old technologies of the last century and be content with domestic goods that the leading countries have not used for half a century. Russian soldiers who robbed civilian homes in Irpen and Bucha in Ukraine were surprised at the toilet bowls in private houses and the interiors in these houses in general. They don't know these modern conveniences. Of course, not everyone in Russia lives like this. In Moscow, St. Petersburg and several other cities they live there like the rest of the civilized world.
Therefore, I don’t understand one thing: why was it necessary to attack a peaceful neighboring country at all, destroy all the infrastructure there, kill its civilians, and for such pleasure be subjected to harsh international sanctions that isolate Russians from the civilized world and set Russia back in development for many decades back. At the same time, here now to prove that Russia in its current difficult situation will be able to survive. Do Russians take pleasure in hurting others, or in making life much more difficult for them? What kind of masochistic nation is this? Of course, why be surprised if after that everything Russian is being destroyed in Ukraine in order not to hear and communicate with Russians in the future.