Ontological status of ideas If determinism is true that's that all our actions are determined. That's all. It doesn't mean it's determined by
causes external to our will. If it's determined that I will write this, then all that means is that it was probable that I would, thus it was determinable prior to the act. If in the beginning of the universe, everything was determined, all it means is that something powerful enough has collected all the information and decided that evidence points to a certain conclusion. I don't know where determinists are getting the idea of no control from - having consciousness and a mind certifies control.
This is what you are saying: it was determined since the beginning, thus I have no control. That's false. What's true is that if it was determined since the beginning, it's probable that the acts that follow are the determined ones.
If it's to be argued that determinism means something else, it can be dismissed as pure fantasy and delusion that a consciousness, with a mind, is out of control of its own actions, due to some higher force. It equates God belief. You literally believe all your actions are guided by some force other than yourself.
Edit: I think you're confusing determinism with impossiblism.