The Soviets took an agrarian backwater where most people were illiterate and didn't own shoes to space in roughly 40 years. During that sime time they were devastated by WW1, immediately invaded by at least 138,350 troops from 10 different nations who backed their oppressors, suffered from a civil war, dealt with literally constant industrial sabatoge, and were brutally invaded by the Germans. They didn't just liberate Europe from fascism, the made themselves into an industrial powerhouse at the same time. They had universal literacy, more doctors per capita than anywhere in the world (a title now taken by Cuba), universal healthcare, 3 years of paid maternity leave (eventually), and not just the right to paid vacations but the requirement that they take them. By no means was it wonderful and pleasant all the time for everyone but to simplify their history to "making everyone miserable before they choke on the dust of overwhelming failure and then die" is incredibly disrespectful. With the constant aggression they faced is it any surprise they had to wield authority? It reflects how little you know about socialist history beyond what your bourgeois society has spoonfed you.
China is responsible for lifting 800 million people out of poverty and returning to them the dignity which had been stolen by imperialists. Can you say the same about your government? Is it responsible for reducing poverty or creating it?