We cannot rove that no gods exist, but we can look at them individually and figure it out. Christians claim their god is all powerful and all good. There are Children born with cancer, that die after a couple years of nothing but suffering. An all powerful and all good god would not allow innocent children to suffer. Mean that he is either capable of stopping the suffering but unwilling, or he wants to stop the suffering but he isn’t able to help. An all powerful and all good being does not exist, so we can say with certainty that, based on the way Christians describe their god, their god does not exist.