Don’t even try, an very basic defintion fo what capitalism is debunks this. “Capitalism is an economic system based on the private ownership of the means of production and their use for the purpose of obtaining profit”, In feudalism the feudal lords just won land not really the tools so peasants are not employed by them they are just landlords sort of. Protocommunism doesn’t even have that caveat. Tradesmen also usally owned their own tools. You don’t need the communist manifesto to debunk this you need basic logic.