It seems like you're defining free will as the ability to make decisions that are fundamentally unpredictable. That's not what the vast majority of people seem to mean by free will. What people seem to mean by free will is something like they can make decisions that are not completely caused by things they ultimately never chose and/or not completely random. That's the type of free will that seems to matter to people, and it's the type that has moral implications, and it's the type that's impossible.