Who brought the government of communism to Russia?

That was Lenin's goal but after he died Stalin took over and killed many people because he wanted socialism.

Lenin did not change Russia into a communist state. He changed it into a socialist sate. This was his purpose all along regardless of the fact that Stalin turned everything into a totalitarian Dictatorship.

According to Karl Marx, the capitalist society would become a socialist one first, then after generations of socialism it would evolve into communism. Communism is not something that can be imposed on any society, but socialism is. Lenin wanted to start that process so after his revolution he abolished all aspects of capitalism in favor of socialism. Although they called it socialism, it was a very poor imitation of what Karl Marx envisioned. In fact, even calling it an imitation of socialism is going too far.