If you have the time, you can go over this video essay by a Marxist author (he has books to his name) on misconceptions about "lower phase communism" as having a state. If it's already communism, then it's already presupposes classlessness and statelessness. As Lenin equated lower phase communism with socialism, that therefore means that even Lenin agreed that socialism/lower phase communism was already classless and stateless. But what about the dictatorship of the proletariat and the Soviet regime in Russia? Well, these were transitional regimes, not socialism or lower phase communism. This video clarifies the difference and corrects the vulgar assumptions common in today's Marxism.