Honestly do some research instead of believing in this Utopian good. I was convinced of it being good at one time too. It takes lots of logic and understanding that it simply cant work with imperfect humans that naturally want to pursue their individual interests. that is the fallacy. Everyone will not work for the greater good. It becomes forced. Not voluntarily. you may not have a hard time with authority but I do. There is no such Utopian society.
The Marxist admitted that many "socialist" countries around the world were failing. However, according to him, the reason for failure is not that socialism is deficient, but that the socialist economies are not practicing "pure" socialism. The perfect version of socialism would work; it is just the imperfect socialism that doesn’t work. Marxists like to compare a theoretically perfect version of socialism with practical, imperfect capitalism which allows them to claim that socialism is superior to capitalism.

If perfection really were an available option, the choice of economic and political systems would be irrelevant. In a world with perfect beings and infinite abundance, any economic or political system–socialism, capitalism, fascism, or communism–would work perfectly.

However, the choice of economic and political institutions is crucial in an imperfect universe with imperfect beings and limited resources. In a world of scarcity it is essential for an economic system to be based on a clear incentive structure to promote economic efficiency. The real choice we face is between imperfect capitalism and imperfect socialism. Given that choice, the evidence of history overwhelmingly favors capitalism as the greatest.