Thank you for the excellent comment.

In my view, a human as a whole - body, thoughts, actions, etc. - at each moment is a dynamic product of genetics, life experiences, and external circumstances (or, more precisely, external influences). The last two elements are ever-changing and interact between themselves and our genetic structure.

We think that we have free will because we have more choices compared to, let's say, a stone. But our free will is an illusion because a human's reactions are as pre-defined as stone's.