But evolution doesn't make those developments improbable or coincidental. I recently read a book called Time's Second Arrow about how selection, when present in systems that can create many combinations, naturally evolve more functional information, which is the number of bits it takes to identify specific combinations that are (in a certain contexts) more functional. (log base 2 of the number of possible combinations divided by the number of combinations that "work" for a given function). They argue that the number of functional bits has been increasing since the big bang and is basically a law of nature in itself.
Hopefully I stated that correctly. You sound like you'd be interesting in this type of book too, but here's a shorter article about it I randomly searched for and read to make sure it was a good representation of the book (ignore the clickbait title of the article): https://nextbigideaclub.com/magazine/new-theory-upends-150-y... But I think the book itself is even better, even just the first chapter that has a quick history and summary about the discovery of the known laws of nature we have so far.
"But evolution doesn't make those developments improbable or coincidental." (not sure what you are on about with respect "Time's Second Arrow")
So, why are you not enslaved by your lizard overlords? 8) Homo is a bit of a johnny come lately and yet has managed to travel to the moon and back.
We only have a single extant example of hom sap to work with. We can work backwards, within reason, and still not manage to come up with a completely satisfying origin story. There is no way you can "derive" hom sap from first principles.