We have certain constants and they resulted in this universe. If we'd have had different constants then we would have a different universe or no universe. In which case we would not be asking questions about the constants because we wouldn't be here.
Humanity has been faced with this dilemma before; Why is this planet just right for us? Just the right distance from the sun, has the right levels of water and oxygen etc...and we answered it by claiming that only God could know what is just right for his creation and that the chances of it occurring by chance are bazillions to one.

That was before we realised there are bazillions of planets all with different environments and the vast majority don't have the conditions suitable for intelligent life. The fact that at least one is suitable for life is trivial in light of this new information.

If this universe is just one of countless universes being produced all the time and ,like the life supporting planet, this universe being suitable for life is also trivial.
This would seem a more plausible explanation than a God and its possibility is demonstrated by the fact that there is a universe and it had a beginning. If one is possible then I can see no reason why multiple universes is not possible.

And bear in mind that the physical constants lead to the "heat death" of the universe.

And there is no variable for "God" in mathematics.

And there is no demonstration that a God is even possible let alone actual.

The fine tuning argument is baseless.