Free will and the “self” - just two sides of the same coin. You’re not free to choose, because there’s no “you” in the first place. You’re just a collection of atoms obeying the laws of physics. It makes no sense to say you could’ve done otherwise. No, you couldn’t - whatever caused you to make a decision in the first place would compel you to make the same choice every single time, no matter how many times you rewound the universe, assuming everything else stayed the same.

We do things for two reasons: either because we want to, or because we have to. There’s no freedom in being forced to do something - and you don’t get to choose your wants or don’t-wants.