What is the best meaning of "The proletarians have nothing to lose but their chains i need answers

The words of the Communist Manifesto "The proletarians have nothing to lose but their chains" describes the ideas of Karl Marx about Communism. He wrote the Manifesto to tell the proletariat how they were exploited and how to throw the chains of capitalist bourgeois. These words describe that that are already exploited to the extent that they have nothing to lose and the communist revolution could bring them to life.