1. There's no evidence God created gayness in individuals. Along with the fall of man in the Garden of Eden, decay and sin entered the human race. Genetic / hormonal abnormalities, such as some theorize occur during pregnancy in the womb, influence homosexuality.
Homosexuality Might Develop in the Womb Due to Epigenetic Changes - SciTech Daily
2. Regarding evil in creation. Assume you're God. How would you create man with free will and at the same time not allow him to do evil?
How would you do that, JANFU?
3. I believe God created life and after that micro-evolution, etc., occurred. As far as modern man, there's zero conclusive DNA evidence identifying any known hominid as man's immediate direct line ancestor.