> if what happens after is what defines free will or not

This sounds much too broad - I can't tell what it means. The things I listed are the normal constraints around how we define free will:

> > doesn't mean you have every conceivable option in mind

I think this is what you were exploring in your reply.

> > nor that you have the power to exercise every choice

I might choose to fly, but that doesn't mean that that is what will happen

> > nor even that you like any of the choices

I might be choosing between allowing myself to be robbed and risking being shot, but I am choosing within my horrible options.

> Did the first particles that ejected from the big bang have free will?

I don't think anyone's claiming they did, no.