You are wrong. If you go back in time you will see that the dude who "likes" to rob will always steal from the same person over and over and over again, unless other factor is added into the event, like a time traveling intervening, just to put an example. But that doesn't mean that thief did not have free will.
You are talking about from a point of view in which the events have already happened, and you are traveling to a point in which the decision to steal has already happened; and from that point you are saying that, the thief while being in that situation will always rob certain person. What you are saying is like "He had a heart attack because he was fat and a heavy smoker". It is so damn obvious that the event will happen in those situations for that person, but the thing here is that you need to understand what made them to be in those situations, and there is where free will takes place.
Every action has a reaction, so a person who have certain experiences (action), will do things according to how he interpreted those events (reaction), and that will depend on how they where raised (or maybe due to some genetic diseases, by how he developed during pregnancy, which will depend of what choices the mother make, and who she choose to be her mate, etc,etc,etc).
Staying with the same example, the guy robbed some dude because he was in the "perfect" moment to do so and because he had the motivation to do it because of certain events on his life that leaded that person to that point of decision in which he resolve to rob certain dude. If you travel at the same exact moment over and over again, it will always happen the same and he he will rob the same dude, because the experiences have not changed.
And also it will be the same because you are going from a time in which the events already happened; it is like watching a recorded event, it will happen the same every time you rewind it; unless you interfere.
Time travel funny thing: If the event changes, that means that in "your present time" you would have no reason to go back in time to see the 1st event, because it did not happened. In the beginning what motivated you to travel back in time was the result of the 1st event; but that event is no more, in other words you would have no reason to do so. XD
Except for the part where you said I was wrong, you are right :D
You just fully supported the determined world view which is the only path in which you always makes decisions free from randomness. The will is still not free though as all of your future decisions were determined even before you and your parents were born.
As for that last paragraph, I guess you've been watching "The Big Bang Theory"?
lol XD. I havent watched an episode related to time travel.....yet, but I have read novels about it, and if you think about it what I said makes sense :D
back on topic, the decisions made before the existance of your parents were made, were made because of the free will of others, and if that changes somehow, you would not even be born, and we would not be having this conversation lol :D. As I mentioned before its an action-reaction "thing", and it doesnt count to "not having Free will" the fact of being unaware of the existance of "reality", because when you are aware you will try do things by though or instinct, but you may not be able to do it because you are in the womb of your mother lol. An example would be like being in prison, you cant go out and buy an icecream, but if you want to escape and buy an ice-cream, you will get shot in the head, so after thinking the possible scenario you decide not to do it (unless you want to get shot in the head lol). It does not mean to not have free will, it just means that their free will is restricting yours, but you still have it.