how are workers gonna own the means of production in a centralised economy

This is not an impossible question, even the most authoritarian socialst governments solved this issue. What owning the means of the production is. Getting rid of the middle man that is called the boss that hoards the wealth from you. What happens in socialist systems is that workers worked for themselves and get the salary according to their works. The money isnt hoarded by anyone. The issue with the soviets was that they had to compete with the american military industrial complex so %17 of their GDP went into military spending. Wich ended in state taking the money.

We can analyse these issues and solve them with the help of planning technologies like computers and AI that gets rid of the breaucrats. But there is no inherent eror with socialism and owning means of production. Also till the Ruling of Stalin (in the time of Lennin) NEP was allowed wich meant there was small private establishments and prohibited monopolies.

There is no inherent flaw in socialism and freedoms. To gain freedom one should firstly get the economical freedom. How can we call a man working all his day free. We can see that the stalinist regime and its predesors curbed freedoms but that was from his governence not the whole doctorine. We are not living in the 50s. We can better the leftist system. With the technology of this age.

We can see what "free" market economy actually ends up in. The rich and the corporations doesnt want freedoms. They want a strong government to enforce workers into their will. This happened in asia in europe in latin america in africa. This "free" market capital will bring a limited prosperity for a limited time with the flow of the capital. But eventualy what this ends up with is that rich getting richer and poor getting poorer. With the destruction of the middle class the rich corporations get right to their monopolies. Whats happening with the world after the 2008 crysis is exactly this.

Then again, we all know socialists dont want prosperity and freedom, what you guys really want is hegelian progress to bring humanity to the eschaton. Exactly like zionists and conservative evangelical fanatics.

I wont even answer this part beacuse its simply just ideological slogans which just shows everyone who doesnt agree with you as an enemy