KellyCriterion, are you making the first causes argument, or the watchmaker argument?
Because the ‘outside of time sentient creator’ argument fails on the basis that sentience requires changes in mental state, and change requires time, so any external creator is just another actor in their own timeline which itself must have a beginning. You can keep adding turtles but eventually you have to assume that the base universe/timeline sprang exists ex nihilo - without a sentient creator. And that being possible that means that our universe might have done it, with no God at all.
If you’re making the watchmaker argument, that argument presumes that every complex/elegant/whatever thing requires an even more complex/elegant/whatever designer. Which raises the question “who make the watchmaker?” And who made the watchmakermaker? And who made the watchmakermakermaker? This is another of those impossible infinite regresses, proving that at some level it must be possible for complexity to derive from simplicity - which negates the need for a watchmaker in the first place.
The shared property of both these two arguments is, both have to answer “who made God?” And if nobody was needed to make God, then God was not necessary to make us. (Particularly since there’s gobs of evidence that real-world complexity was emergent and not created.)