heres a few real arguments
https://www.marxists.org/archive/marx/works/1847/wage-labour/
https://www.marxists.org/archive/marx/works/1848/communist-manifesto/
https://www.marxists.org/archive/marx/works/download/pdf/Economic-Philosophic-Manuscripts-1844.pdf
https://www.marxists.org/archive/marx/works/download/pdf/Capital-Volume-I.pdf
https://www.marxists.org/archive/marx/works/download/Marx_Capital_Vol_2.pdf
https://www.marxists.org/archive/marx/works/download/pdf/Capital-Volume-III.pdf
literally tens of thousands of pages on a topic you can't even define and you say they have no arguments.