You cant have a stateless society because there needs to be a hierarchy. You need to have laws and regulation. So you need to have people enforcing those laws. By definition you would have state. If you have a group or people who are enforcers of laws then what is stopping them from encroaching on more power. In communism there is no private ownership of resources. But since it’s impossible to not have a hierarchy (state) without lawlessness, you would be transferring all ownership to government rather than the citizens.

No one is entitled to your goods and services. For example, if your home had an issue with your plumbing. Would you be entitled to someone else plumbing service? What if your home or business needed its roof repaired and it was big strenuous job. You can’t be entitled to someone’s else’s labor. Therefore they are going to name their price and highest payers get the services and communism falls apart.

Communism relies on perfect moral citizens to even be considered possible. You would need a crimeless society free of violence, theft, etc.. this is implausible and going back to reason number 1, because having perfect citizens and a society with no crime is implausible. You would need a hierarchy or state to enforce said laws and regulations, and controlling the means every thing. In a communist system, where the state controls the means of production and distribution, there is a centralization of authority. This concentration of power in the hands of the state can lead to a lack of checks and balances, creating an environment where a single party or leader can wield significant control.