Not being able to do what you want, does not imply lack of free will. Having to make a forced choice, not to do something, because of social consequences, requires free will; control our self. If we all completely lacked free will, people would act on impulse and would constantly suffer the consequences, since they could will to divert from impulse. Everyone would take the easy low road, rather than use free will to climb to the high road.
An animal does not have free will since they are under instincts which thinks for them. The lion cannot will to become a sheep. Humans can pretend not be to human or their natural sex due to will and choice. Humans, developed a secondary center of consciousness, about 6-10K years ago, that was not exactly connected to the natural instinctive program of previous humanity.
We developed will and choice apart from the instincts of natural man, allowing us to become unnatural to the earth; mess up the earth. Culture, through knowledge of good and evil and law, sets rules that do not allow our will and choice, to go down the tubes. This adaptation against our own inertia, requires will and choice, assisted by the legal carrot and stick.