True communism is authoritarian, even many real communists dislike anarcho-communists.
And as for not believing in countries, the world would be full chaos if not for political organization of some sort.
And looking back at non-country communism. Makhov’s "black army" was an anarcho-communist movement during the Russian Civil War. Because of their lack of strong, functional leadership, they went all over the place and eventually collapsed. They first helped the Soviets fight off the White Army, then the two communist groups turned on each other and ended with the liquidation of Makhovshchina. Just a real life example