It's actually quite simple: God planted the seed of life on our planet by creating Adam (the first organism) in order for him to evolve into humans
It's actually pretty silly to just think that God would just put us on Earth all confused about what's happening and why all of a sudden we just appeared here
He would have had to create evolution for us to reach our perfect form because the gift of life itself is just like our lives and is destined to grow up and one day disappear
Genesis also totally corresponds with scientific explanations. First there was light, then there was water, then there was land, and when the land was granted fruit and plants we come along and chill out under the sun. This is what Christians and scientist both believe happened.