All living things make choices. It is part of the very nature of life as a self-organizing phenomenon. The human mind is the same.
Like I said above… ALL living things have a spirit. The question is when is this a human spirit and that requires a mind. And a mind requires a functioning human brain… which requires brain activity.
That depends on how you define “winging it”. I am not God and I am not omniscient. But do I have good reasons for what I believe? VERY! For example, shall we talk about the mathematics behind this in chaotic dynamics which show how choices happen in complex systems? The point is that you can ask for whatever details which might interest you.
I don’t even care to imagine. The point is that subjective religious beliefs with no objective evidence might well be compared to some bizarre fetish because there is no basis for a reasonable expectation that others should agree with you. It only has relevance to your own PERSONAL life.