God is the great spirit friend

[Ryantology]

I can promise you, and swear 100%, with everything that I am, that I have experienced mystical events that do not require an interpretation, that there is no other possible interpretation other than believing that a supernatural event happens, although that does not confirm all the details of the theological interpretation (such as that the source was the God of theism).

And I don't doubt you truly believe all that. It's still not proof of anything except that you believe all that.

There is no confirmation bias associated with reporting on sense experience directly, it is only at the point of interpretation in which confirmation bias can enter.

Senses are tools used by the brain to interpret stimuli. There are countless opportunities for bias to enter, and all it takes is a single instance.

In this case you have interpreted some kind of event to be communication from a God you already knew about because you spent your entire life living in a culture where that God is either the primary deity people worship or one of the most important ones.