How does the brain/life create subjectivity, Or an identity?

[Ruhe1986]

In you're honest, rational opinion. If as life, we are just a chemical soup. With the same elements of the universe inside of us, just arranged in a more structured way, then how come we have subjective experience. Why is it that I have billions of basically identical neurons in my brain, that fire the same way, and yet they all collectively create one individual with subjectivity. Better yet, why is it an amoeba, with literally no neural structures present, can traverse and function as if it has subjectivity. Does that mean that all Life (including individual cells) have subjectivity? Including single celled organisms? What does that mean for us as living organisms, and in your opinion, why is is that this subjectivity exists in the first place in a basically benign non-living universe. and how far does this rabbit hole go? Does this mean that even basic Atoms are conscious and can feel subjectively? btw in identity i meant "the self"