OP must be refering to the metaphysical definition, as they do not believe that souls exists. As you point out, denying the idea of personal experience is unreasonable, therefore OP must hold that “soul” refers to something more and is not synonymous with the sense of self.

You argue here that such a “something more” soul does not exist, reasonably attributing the idea to emergent properties of natural systems, yet you seem to argue that this constitutes every definition of soul, including the various flavours of “something more”, simultaneously answering yes and no.

This is where the confusing begins. Do you believe souls are emergent or elementary? Is there a persistent metaphysical aspect, or are they ephemeral at best? Are they simply produced by the flesh, or is the flesh just where they reside while alive? Do souls exist, or are they an illusion like a tree in a painting?