Deterioration of the economy usually leads to more war even more quickly. You can take Germany after the WWI as an example. Positive regime changes are only possible in the stable economical situation. Take me as an example - at the moment I do programming for a living. Let’s imagine I’m cut off of all the tools, customers and equipment. What would I do? I’ll probably have to work for the regime which will become the only source of the income, will get much smaller wage, work longer hours and have much less resources and influence to change the situation. We went through all this during the Soviet Union times. Such regimes benefit a lot from the isolation which allows them to turn people into slaves essentially.
The idea that you can improve anything by harming people never works. Putin’s propaganda is using the same argument- they claim that they fight in the Ukraine to improve the situation in the region. I doubt you believe that.