Chocolate actually exists to be experienced. Now you might have Covid and can't taste it. But you can be aware that cocoa beans actually exist, people cultivate them for chocolate, and it isn't just a 300 year, global conspiracy to fool you about chocolate.
Same situation as above.
Except no Gods are known to exist. No supernatural phenomenon is known to exist. there are contradictory versions of gods. There is study of the religious brain and why it does what it does. Plus, non-theists ask serious questions that theists can't answer.
No God is known to exist to those who do not see God, but to those who do see God He is more than real. But without the spiritual senses, one cannot know God. And these are developed through prayer, meditation and a pure heart.