But this is not a definition-freak's topic, that demands a full, precise, and detailed definition, down to the last electron, before further discussion is permitted. Nothing so authoritarian!
This topic seeks to clarify free will. I have two questions to start with; you may have more to add?
1. What freedom(s) does free will bestow?
2. In contrast, what are the freedoms that free will does not, or cannot, bestow, if any?
In other words, if we do or did have free will, what impact would it have on our real-world lives? What are its effects? And if we don't have free will, what does that mean, in terms of real-world consequences?