Since you asked and that was one of the first questions I asked the Archangels, I’m happy to answer you.

As you said, humans kill people, along with committing many other crimes and atrocities. God created man and gave us free will. He’s not the one doing these things, and we are not His puppets. That stuff is on the people who freely choose to do these things, not on the Creator or you or me or any of the billions of good people out there.

Hope that helps. Best wishes to you.