It is true that one cannot prove that God does not exist. Any kind of universe is consistent with the existent of some god, since all one needs to do is to claim that the existing universe is the way god wanted to create it.
On the other hand, it is possible, in principle, to prove, or at least demonstrate conclusively, that God does exist. All one needs are bone fide miracles, events that simply cannot be explained through natural laws (including the potential for human error). If nothing else, God could make a personal effort to demonstrate to
me that she exists by directly speaking to me and consistently showing me one miraculous event after another.
It seems that if there is a god, she created the universe in such a way that there seems to be no known phenomenon that does not have a naturalistic explanation. If god exists, she is the god-of-the-gaps, and the gaps are very small indeed.
Sure, I cannot prove that there is no god, but, as one person stated so long ago (I have read different possibilities as to the exact person), I have no need for that hypothesis.