No, you cannot verify the existence of God nor disprove it. To say either side is undoubtedly true is arrogance. A long time ago people thought the weather was controlled by Gods yet that has been disproven through logic, mostly everyone then thought "There's no way humans could control that, it must be a higher being... a god!" but we can both agree that's ridiculous right? Humanity is constantly evolving. God is not needed in modern society.
I don't have time to reply to the rest, I'll do it later. Just gonna leave this here