You keep using evil nature as if it’s a specific process like a young earth creationist. It’s all evolutionary byproducts.
Take some of the sins that bother us the most.
Murder. Animals killing animals happens all day everyday. Even some plants and fungi kills animals. Emotions are also seen in a wide range of animals. If I find a stray dog and I’m mean to it , that dog will potentially attack me. If I jump into a lions den I potentially be eaten. If I go up to strangers and harass them and threaten them I may come across someone who kills me. There are a few main murders we see within our species against itself.
Over resources. We routinely see this. Someone robs a house and kills them for their resources. We see similar things in animals over territories.
We murder out of fear and hatred. Anger is normal. Even bees warn you when they think you are a threat. Cats hiss at things they don’t like. Anger is not evil. But we can sin in our anger. We can choose to jab a spear through our brother because of not being as favored by God as him. But that does not mean our anger was “created” as a way to murder innocent people.
Rape. Sex is normal. Seeing others you are attracted to is normal. Being attracted to someone that’s not attracted to you is normal. As we evolved, we have learned to look beyond our instincts and biological drives such as procreation. As Christians, most of us has a standard that sex is reserved for marriage. As a species we tend to all agree that forcing yourself on another is evil. So just because sex and romance is normal drives in our species does not mean they were created so that we force ourselves on others.
So let’s try this. Pick one specific sin and let’s see if that sin is the drive of creation, or a byproduct of free will able
To abuse it.