The Soviet Union and later Russia and China excel at the making people suffer part. But tankies seem to ignore or flat out deny that.
The USA isn’t much better. See their prison system or healthcare.
I think the most successful countries are Norway and Iceland. But they have a free market so they might be called capitalist. But it’s heavily regulated and they have very good social security services. But that might be called socialist or communist. In Germany we call it social market economy.
I hold it like Obi-Wan Kenobi: Only a Sith deals in absolutes. Look beyond labels and see what is actually working the best for everyone.