Socialism is an economic framework more than anything else. It's obvious that these countries had issues, but saying they were all caused by the way they distribute money is a bit of a stretch.
These countries took bits and pieces of leftwing policies, and then added their own rubbish on top. They don't really represent the modern left, just as the US pre-Civil Rights doesn't represent the ideals of most in the US now. Oppressive social policies exist or have existed under every flavor of government. It's certainly not limited to, or an integral of the left.
Authoritarianism is not Socialism.
Many countries have implemented left wing policies with success.
The government of Norway owns a large percent of its resource extraction and oil industry. The revenues are used to provide social services such as free healthcare and education to its citizens.
You obviously won't find Norway on this list, but feel free to scroll through and see if you can find a pattern.