How did Cortes interact with the Aztecs?

The meeting between the Aztecs and Cortez didn't go very well. As you may already know Cortez befriended the Aztecs because they thought he was a holy God. He left the city and when he returned he realized his men had killed all of the Aztecs due to some religious ritual. I think that if he had been there he would have stopped his men from killing the Aztecs, but that is just my opinion. So in conclusion the meeting between the Aztecs and Cortez went horribly wrong; in result many innocent people died.