The things that happen by chance still bend to the arc of what is in the best interests of the organism by way of adaptation to its environment. That's what evolution is.
Your body is much more intelligent than you give it credit for. Whether that's due to God or something else is not for me to say, and is frankly irrelevant to this discussion.
"Darwin wondered about the changes in shape of bird beaks from island to island. So-called cactus finches boast longer, more pointed beaks than their relatives the ground finches. Beaks of warbler finches are thinner and more pointed than both. These adaptations make them more fit to survive on available food.
Researchers at Harvard Medical School have taken the story one step further. Using modern genetic analyses, they found a molecule that regulates genes involved in shaping the beaks of Darwin finches. “Calmodulin is a protein that binds and activates certain enzymes, which triggers a signal that eventually turns specific genes on or off,” explains Arkhat Abzhanov, an evolutionary biologist at Harvard. These signals alter the behavior of cells responsible for beak sculpturing.
The investigation soon focused on calmodulin as the switch that can turn on genes involved in increasing beak length. This protein had never before been implicated in the development of the skulls and faces of any birds.
“We found that calmodulin was indeed expressed at detectably higher levels in cactus finches compared to ground finches, and thus associated with their longer beaks,” says Clifford Tabin, professor of genetics. “This higher level is both biologically relevant and functionally important for shaping of elongated beaks, which are used in a specialized manner to probe cactus flowers and fruit for pollen, nectar, and seeds.” The same surge of calmodulin was not found in more blunt-beaked ground finches.'
https://news.harvard.edu/gazette/story/2006/07/how-darwins-finches-got-their-beaks/
In other words, mutations are not only happening by chance. Sometimes they are taking place is response to the needs that the environment presents. Our genes and the proteins within them are switching off and on in response to the needs presented by the environment. This is basic evolutionary biology. You deciding it doesn't work like that does not impact the scientific fact that it's well established that it does.
