What made you sure there is no god? (Asking because I’m struggling)

It’s been about a little over a month since I left Christianity and I’m proud of myself for making it this far without freaking out and cowering back to the religion that’s hurt me for so long out of fear. But I do still occasionally struggle with the anxiety of God still being real and that I may go to hell. Can you like… tell me how you guys are sure there is no god to help me feel better? I know that there might not be any proof of no god existing but there’s also no proof that he does. Can you maybe tell me your own personal experiences, theories scientists have had or recommend media that might help like books, YT channels, etc? Just anything helps.