We do not. That is only your perception due to the nature of time.
The future is determined by our choices, and not by an agent's knowledge of the future.
The only reason that I can see that you should think otherwise, is because you see time as an absolute phenomena which cannot known in advance. You then suggest that a known future is determined by that knowledge rather than ourselves.
It is a flawed conclusion. It makes no sense to suggest that G-d knows what we will choose because He has predetermined what we will choose. It is simply wrong.
As far as G-d is concerned, "the pen is lifted, and the ink is dry".
In other words, while we perceive that "it hasn't happened yet", G-d perceives that we have already made our choices.
You might not believe that or think it is impossible .. but there we are.