In practice, all attempts to implement communism have resulted in mass starvation, extreme political criminality, and huge environmental damage.
So it looks good on paper, but in reality it’s bad.
Because the communists who wrote about it on paper, failed to understand some very important points.
In short, communism *completely disconnects* what society wants produced from what is actually produced.
To understand more, you need to understand economics.
You can start with these books:
1. “Economics on One Lesson” by Hazlitt
2. “What Has Government Done to Our Money” by Rothbard
3. “Profit and Loss” by Mises
What is wrong with communism is that it does not make good its criticism of capitalism - it is mistaken about what the problem is.
And secondly, it does not make good its claim that we’re going to be better off if the government takes over control of everything - it is mistaken about what the solution is.