So, yes, other people had similar environmental circumstances, but they weren’t the same environmental circumstances, and they weren’t experienced with the same brains. Nobody gets to pick their neural arrangements, and even if in some hypothetical sense you did, you wouldn’t get to pick the algorithms you did the picking with. There’s an infinite regress there, unless you acknowledge that it grounds out in you get the mind you get. Libertarian free will doesn’t seem to map to anything in reality, and while I’m always willing to update on new evidence, it’s been a long time since anyone’s presented anything really novel in that area.