This is a tired point of discussion, brought up exclusively by contrarians trying to be edgy. No one earnestly believes that they don't have free will, because if they did, it would result in obvious deviance in behavior. Everyone treats each other as if they have choices, and in turn behaves like they have choices. If the assertion is that we don't have free will, but are forced to (due to our lack of free will) to behave and believe like we do, than there's no difference in experience to compared to having free will, and it ends up in the pile of pointless conversations like what if we're a brain in a jar, or in a simulation, or whatever.