You have it backwards: those neurons firing is my free will. In other words, I am not a product of neurons firing, I am neurons firing. I feel like we should

You have it backwards: those neurons firing is my free will. In other words, I am not a product of neurons firing, I am neurons firing. I feel like we should reread Descartes' Meditations. But roughly speaking, "I think therefore I am" can be interpreted as "I am thought." What is essential to me is the information processing that happens as a result of the neurons firing.