Have you by any chance read The Communist Manifesto or Critique of the Gotha Programme? Both are very short reads, and give some level of idea of what Marx is directly advocating for, as opposed to his general critique of Capitalism or his philosophical work on Dialectical Materialism. Marx was no Anarchist, he advocated for building Communism over time. This didn’t mean “waiting for the state to one day turn on the Communism switch,” that ignores his entire philosophy of Historical Materialism, whereby societal contradictions are worked out over time, as nothing is inherently static and everything is in motion.
None of this requires any of Lenin’s work to be read at all.
If you’re saying that a “True Communist” would somehow magically create Communism directly via revolution and not over time, then Marx was not a “True Communist.” At this point, you’re deeply silly, and simply redefining Anarchism as “True Communism” to win a game of semantics and label all non-Anarchists as conservatives.
Edit: oh, in another post you directly out yourself as a Soulist, and thus you disagree with Marx not only on his advocacy for Communism, but also his philosophy of Dialectical Materialism. At this point, you’re content to deny science and Materialism for the sake of pushing forward the idea that ideas create reality, which is deeply unserious.