It is not incumbent on atheists to prove there is no god; a demand to prove a negative is fallacious, and fundamentally so.
It is believers who are making the preposterous claim; a supernatural being exempt from everything we know about science and logic (especially logic). We are supposed to believe in that, “just in case?” In the complete absence of even the most rudimentary evidence, with thousands of years to come up with any?
If I said “there is an alien base on the far side of the moon” it would be my job to provide evidence of my claim, not yours to prove it’s not there.
The only difference is that my alien base doesn’t have thousands of years of ignorance, superstition, fear, hatred, and extortion behind it.
I remain a firm disbeliever.