Did hernán cortés care about saving the souls of aztecs?

I don't think so. In all words, Hernán Cortés was pretty evil. He brutally tricked the native people by turing their nearby enemies against them, many  tribes resented the harsh rule and steep taxes the Aztecs imposed and were willing to join with Cortes. He also spread smallpox amongst the natives killing many people and later invading the city,and after several failed attempts to convince Emperor Montezuma to submit to Spanish and Christian ideals , Cortes took the Aztec leader hostageas well as  taking almost everyone as slaves and shipped them off to Spain. He plundered a lot of gold from the Aztecs and brought it back leaving their magnificent civilization, religion and beautiful gold relics in shatters. So yeah I really don't think he cared about the people, just the land and money(gold) that he could get.