The only possible evidence is prophesy but a lot of them are suspect. What does it say when a "god" is so hidden from "His Creation" that people spend a lifetime sometimes "seeking" him and some of them end up in cults. If there was a god who loved his people, he would make himself plain. The choice some people have today is choosing evil or the Tammy Fay Bakers of the world which is all some people will ever see of Chritianity.
If you are not looking for him with the right heart, he won't be found by you.
These are just excuses you are currently using to maintain your unbelief.
I don’t even know what it means when you say God is not about rules but relationships. I wouldn’t have much of a relationship with my wife if I could never see, hear, touch, etc. her.
Exactly, but
why did you seek a relationship with your wife?
Was it because you wanted to know her? Or did you have another motive?
At the moment your motive concerning God isn't clear. You seem to have a bone of contention you want to pick with him.
You seem to think he OWES you something. It looks like you think he owes you physical proof of his existence.
He will reveal himself to a sincere heart, not a cynical one.