The best argument for existence of God or artificial creation is the rate of black hole formation throughout the universe, which hints towards a universal consciousness or evolutionary mechanism aiming maximal fertile production of universes if one assumes black hole formation is basically the birth of a new universe.
That being said it is impossible to exclude or prove the existence of God itself, but it is hard to proof to why one religion is more valid than one other, even considering Abrahamic beliefs basically believe in the same God, just some other interpretations which is ironic since judaism, christianity and islam actually aren't that different from each other, and share the same foundation.
However it is also hard to prove why a cultist belief is a cult and a religion a religion, and considering religions might be cults that gathered millions & billions of followers throughout thousands of years, what makes a cult a cult and a religion and religion is an incredibly vague thin line, imo non-existent. But even if one considers a religion as a cult (or all), it still doesn't proof that God does not exist.
You can say anything and not be proven wrong because it is impossible to prove you were wrong on the subject.
Flying Spaghetti Monster is also just as valid as the one Christians believe in.
