Look at your choices and try to find an independent entity making a decision.
You will likely notice your conditioning and preferences, beliefs, emotions, thoughts, physiological and psychological state in the moment, your environment, habits, trauma patterns, all collaborating toward one thing or another.
“Free will” is a shortcut for all these forces we have mo control over. Even when we explicitly feel we’re in control - usually the goal this control serves is not in our control. We don’t choose our preferences, tastes, morality, desires, or thoughts.
Paradoxically, in this complete absence of “choice” as we understand it, lies freedom.