I do not see how free will is possible since all decisions are impacted by genetics, history, education, and circumstance.
It is not difficult to refer to a common set of a chain of cause and effect situations that both free will is involved deterministic influences are involved.
The choice of ones belief system is a common situation. Culture, genetics, history, education, and circumstances do limit the free will choice of which church or religion on chooses, but nonetheless people often weigh the evidence and deterministic influences and make a choice within a selection of beliefs that fit their desire for a 'sense of community' and comfort zone, which represent deterministic influences in and of themselves. The fact is people do make different choices given the limits of deterministic influences,