but i wonder what term can be applied to something that is "self evolving" that is: to evolve into a different structure than its initial state, without any outside interactions.
But things just do that on their own. Take a sealed glass of water at room temp and put it in the freezer. Without any outside interactions, the water will "self evolve" into ice. The term we use for that is: freezing.
In the context of the universe/Big Bang we just call it 'expanding'. You seem to think that the universe was just hanging out as a singularity for some amount of time and then something happened that made it change into what it is today. It turns out, that is not the case.
Things change on their own. Take some gas concentrated in a little box, put the box in a room, and then open it. The gas will fill the room without outside interaction. It just does it all on its own, and there's a term for that too.
We don't need some all encompasing term like "self evolving" to describe things that are already defined.
your words are like venom
Ditto.
I'm looking at biology to its simplest "irreducible" form to determine what "irreducible complexity" truly means, and where it would be truly applicable.
Then you're not talking about irreducible complexity.
Why obfuscate the issue by taking an already defined concept and turning into your own little fantasy?