If you study the origins of the universe you will eventually reach the time before the big bang where they was nothingness. It is logically impossible for something ti come from nothing so there had to be a first mover that brougut the first particles into existence.
If you study evolutionn, you will eventually reach the complexity of molecular biology and the theory that it is driven by natural genetic engineering of a cellular intelligence. Where does this intelligence come from?
How did the first life spring into being from the inanimate material of the universe?
People delude themselves thinking that human observation of the universe can ever replace their creator.
God always existed. Time is one of his creations in this universe.
More god of the gaps bullshyt.
What you didn't know today will be explained in due time. You can't keep putting god sized holes in your personal ignorance.