Is there a First Causer? Nobody knows. Is there even need for a First Cause? The lack of need for a first cause doesn't contradict the laws of nature as we currently understand them - the fact that you reject this science doesn't invalidate it. Making a First Cause compulsory creates more problems than it solves. Can a universe self-construct, with all the immutable order? Yes. We can now imagine with our current knowledge of the laws of nature how this can happen. Is there Will and Purpose in existence? Yes, created by at least humans. I really don't know, but tripping over religion's God all the time is pointless. Yes, but we do so anyhow. I don't know why things are as they are, but does that then eliminate a God, First Cause, from the list of what might be possible? True, but nothing that we know of makes a God and First Cause compulsory.
