What proof would it take for me to believe in god?

[Neo-Scholastic]

How about we start with the thing most gods seem to have in common - intelligent agents without material existence who can nevertheless affect the material. Once you have evidence that that is possible, then we can go further.

Actually, that’s not a good starting place since such a conception of God is as a thing among and apart from other things. A better starting point is where all monotheistic traditions agree; God in His fullness is ineffable. Just as God is not a thing among other things as mentioned above, knowledge of God is not some piece of information that you can store alongside other facts. It is like knowing oneself as a knower, a kind of gnosis that is immediate and intimate. People gain this type of knowledge about God from either general or special revelation or both.