You are making sense. These are logical questions that many people ask. I think the book that most directly answers these questions from a Christian view is "Mere Christianity" by C. S. Lewis. Take a chance, you aren't on Reddit anymore this book literally expounds a rational argument to why there is objective morality that all humans recognize. It is a law of human nature, the only law of nature that can willingly be broken. The law is made to test your soul in this life.

https://youtu.be/J92gQDZ4dL8

God intended for people to be susceptible to evil, there would be no point in that. He has Angels, what he wants is children who in spite of all the horror of this life, recognize the great blessing it is to be able choose to be better than that and, to work to make the world a better place for those they can help.

God's only son was made to; wear a thorny crown, bear his own cross and got nailed to it and speared till death. I do not expect to get through this life without having to face atrocity, pain and, death directly. It is up to you and me to stand against it and, make a place where children can grow up in peace.