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You are not independent of your observation. The probability that you live in a universe cable of supporting life is 100%. It would be impossible for you to observe any other kind of universe. Any universe incapable of supporting life will contain no observers.
For all we know there are an endless number of universes, mostly with laws of physics vastly different from our own. The universe itself seems to already be spatially infinite, why not also have infinite universes? There may be a vast ocean of universes out there, and the vast, vast, vast majority are completely uninhabited and uninhabitable. Realms containing only black holes. Universes where only light exists. Spaces where the universe is born as a cloud of hydrogen gas, and simply never gets beyond that. Maybe for every one universe capable of supporting life, then there are 10^(stupidly large number) of empty universes.
It may seem strange or unscientific to postulate other universes, but it's a lot more scientific than postulating an intelligent, conscious creator that set the universe in motion. In the latter case, you're simply assuming more of something that we already know can exist - a universe. You're just assuming universes with different physical contants or laws. In the latter, you're assuming the existence of an entity that has no other parallel examples. We don't seem to live in the world of Greek myth where there's multiple deities running around we can all openly observe. If you assume a creator, you're assuming something that has no evidence for any entity of its kind existing. If you assume multiple universes, you're simply assuming more of what we already know exists.
It is telling that we don't live in a particularly habitable universe. Sure, we can tinker with the physical constants to make life impossible. But for a universe so "fine tuned" for life, an astonishingly insignificant fraction of the universe's space is habitable by life. An astonishingly small amount of matter is living or even involved in sustaining life.
And the best the universe can seemingly do? In our solar system? A thin slime of life on a single wet rock, maybe some bacteria in some ice shell moons or deep subsurface bacteria on Mars? And the jewel of the system, Earth? That thin shell of life requires an entire planet to give it a surface to live on. And then the mass of an entire Sun is needed to keep Earth's surface habitable. That's the best environment for life the universe can naturally create. I'm sorry, but from an engineering perspective? If you are writing the very laws of physics and reality? You can certainly do better than what we have.
The universe is not fine-tuned for life. Such a universe would be one where the vast majority of space, matter, or both were habitable. It would be one that can efficiently support life, not requiring entire astronomical bodies to support rounding errors worth of living matter. If the universe was designed for life, it was designed by a shit designer. Maybe God's an apprentice deity and we're his practice project.
What we live in is a barely habitable universe. Look around you. The stars seem mostly dead. Our own solar system is dead rock after dead rock (with some possible exceptions.) We live in the type of universe that most observers would live in if there were a huge number of universes with randomly assigned physical constants. In such a setup, there may be some hyper-local optima where universes could be superhabitable, but their total number of inhabitants would likely be swamped by observers in universes that were just habitable enough to get life going.
The seemingly-logical need for a creator disappears if you simply postulate multiple universes. And our observable reality really does match well with us living in a barely habitable universe, which is what we would statistically expect if there were a large number of universes in existence.