The curse of Eastern Europe, to die and empty out. It's the same in my country. Life in the UK and Germany > at home. And it's an exponential process, for every 1 person, 5 probably leave. My hometown was nearly 100k in the 80s, down to 50k if that by now. And it's mostly elderly, children, who grow up, go to the capital or just immigrate.
Abandoned cities will be everywhere over the next century. Especially after the population collapse in Asia.