And where did humans come from?
Humans are the result of a very long history of evolution, including a common ancestor with apes and monkeys. Prior to that, the critter that later became humans, went thru a huge series of evolutions, all the way back to the primordial soup.
Prior to that? the earth was inhabited by the very earliest and simplest forms of proto-life, things like amino acids. Prior to that, it was uninhabited. Prior to that, it was free-floating material and atoms that slowly came together under the effects of gravity, and became a planet circling our sun. Prior to that, the sun was born out of atoms, matter, gravity, pressure, and heat, and birthed a solar system.
Prior to that, the universe began in what is commonly termed, "the Big Bang". Prior to the Big Bang, it is unknown what existed and I am not familiar with the theories.
This is what mathematics, physics, astro-physics, biology, chemistry, paeleontology, and the world of sciences has shown us to be true. There is evidence, very strong evidence, to support that series of events.
is it possible that this all was put into action by a supreme being? It's possible. But there is zero evidence to support it. That is a matter of faith, that you are welcome to believe, but not welcome to treat as if it is science.