I absolutely can acknowledge the real existing struggles faced by AES states, and can offer contextualization or explanation of how we can avoid making the same mistakes. What's more evident than anything is that you don't actually know what those struggles really were, so you throw it all under the banner of "COMMUNISM BAD," which I can't engage with.

If you ask me about a specific event, time period, action, etc. we can have an actual dialogue. Failing all else, I recommend you read Blackshirts and Reds by Dr. Michael Parenti, he takes a critical eye towards the successes and failures of the Soviet Union in a way that analyzes what actually happened there.

Eventually the real world will let you know that Marxists are right, yet again.