How so? Give us the (your) definition of Marxism and how it is the textbook of communism.
Better yet I’ll give you the textbook itself
Karl Marx and the Communist Manifesto
Well, that's fun....throw a whole book at someone. When did you read it? Point out the specific definition of Marxism you got from your reading of that book.
I have never read the whole book from cover to cover
Not many people have
Marx was an anti capitalist and he advocated a collective society where everyone received equal shares of the wealth
This was to be accomplished in two stages
First by socialism where the motto is “from each according to their ability, to each according to need”
And some private ownership is allowed
Socialism is only the stepping stone to communism where there no private ownership at all
Feel free to copy this and use it yourself in the future