What would it take to assure you that God is real and God cares about you?
The same way you would prove you are real. I would want Him to stand right in front me me and say, “hi”. That would convince me.
Why should convincing you be important exactly?
Because people like you say that god kingdom is so fantastic, I want to see it for myself. But so far, nothing but goose eggs.
Then go and find it. No one is stopping you but you.
Just tell us how you found God so that we can use the same method. It turns out this is quite a complicated process for some reason.
Have you ever considered that God hates some people and loves others? (Like the Bible says). If God hates me then He probably doesn’t want me to find Him.
John Calvin is considered the greatest theologian of all times. John Calvin taught that God chooses some and ignores others. His theology actually makes sense and is consistent with the observation of myself and many atheists.
You seem to be an amateur theologian with a theology that makes no sense whatsoever. Are you sure that you and Calvin knew the same god?
Your theology is lacking an explanation for why God reveals Himself to you but refuses to reveal Himself to me. Calvinism explains it plainly and clearly.