All you have to do is tell us what free will means.
If I am not mistaken, the term comes from religion. God is all-powerful, but has seen fit in his benevolence to grant you the option to disregard his commands and rules, thereby washing his hands of all the ungodly and f**ked up things that's going on in this world.
Then philosophers contrasted free will with determinism, but that does not give a satisfactory account of the fact that some things we can chose and some things we can't. You can't say either or, because without the background of a determined state of affairs the ability to make choices is meaningless.
You can quit your job, and you probably know what would happen.
You can walk over to the neighbor and steal his car, and you also know what would happen.
You can jump off a building, and there's a pretty definite ending to that choice.
You can chat up a girl. You have a pretty good idea what is likely to happen and what probably won't happen if you do.
All of these things you can chose with your own free will. But how will you know what to chose if you have no anticipation of what the outcome might be, If there wasn't a background of determined outcomes you were able to aim for...?
Free will is not the contrast to determinism. It's how we practice it...