Some people believe the Garden of Eden is or was a real place. They debate endlessly where it might be and sometimes go to great lengths to try to find it.
The modern interpretation is more symbolic. The Garden represents the world the way it is supposed to be, a place or a state of mind where people know who God is and what his purpose for us is. It also explains why it isn't that way at the moment.
The ancient writers imagined a perfect world where there was no evil, not even the concept of evil. They tell us how they imagined evil came to be. Obviously, they didn't have access to the science we have today, but somehow they knew that humans have two sometimes conflicting tendencies. First, we have an innate desire to be in community with other people. This state of compassion and cooperation can be easily upset by our other personality trait, the desire to protect ourselves. The slightest hint of an attack can cause us to go into defense mode and do things we would later regret.
Under perfect circumstances, in the Garden of Eden or the Kingdom of God, there would be no reason for any of our brains to ever go into defense mode. There should be no reason ever for anybody to attack us. Reality is that it happens anyway from time to time. Then we have failed God's purpose for us. Thank God we can ask for forgiveness and resolve to do better.
We can't change the world. What we can do is do our best for our own behavior to make it look more like the Garden in the eyes of other people. That is our purpose in life. There should be no reason for anyone to ever attack anyone else.