This dunya is enough to prove that Allah exist. And you are enough to prove that Allah exist. Everything good and bad is enough to prove that Allah exist.This Fitna in this Dunya is enought to prove that Allah exist. Your proof, Read up on your history, on religion. I prefer Isalm for you to read on but read all religions. Educate yourself and you will understand that Allah (swt) exist.
InshaAllah
InshaAllah