As much as I am a huge believer in self change and becoming who you want to be, which I think could be seen as freewill, I can’t help but believe determination undermines it.
For me, it doesn't matter if will is free or determined. These might be very different universes, but whichever one we live in works fine and is obviously not just acceptable, but amazing, so we should resist our tendency to guess which it is and have an emotional stake in it being either way, since whichever it is supports this existence. I'm open to either possibility, although my intuition is that will is not the freely generated desire of the self, and that what is called free will is what I have called the illusion of free will.
But this is a big issue in Christianity and perhaps all of the Abrahamic religions, which insists that will is free. It's an essential element of a worldview that has a deity punishing man for his choices. Whereas I'm happy to give up free will if that's how reality is, the believer is not. And as we see, this creates problems of coherence when one throws in that the creator is omniscient. Not at the temporospatial scale man lives at if free will as I define it below manifests there.
To clarify what I mean, what most of us call free will is the experience of discovering an inclination and being able to execute an action in its service. That inclination may well be determined by material processes outside of consciousness and delivered to the self to be discovered, and be mistakenly understood as having arisen from the self-uncaused - the so-called illusion of free will. Even if that desire is the result of indeterministic quantum processes, still, if it is generated outside of consciousness and delivered to it to be discovered and experienced, it is not chosen or created by the self.
Freewill is granted. God knows what our choices are. The plan works with our choices included. That is why God continually warns us of the consequences of our actions.
This is an example of the inherent self-contradiction of this philosophical position. We have a will called free despite its output being known in advance by an omniscient deity, and yet man is warned to behave a given way by this deity that knows what the decision will be in advance, and worse, punishing the individual for doing what it was created to do and what it was known in advance it would do. The Garden story epitomizes that incoherence well, which it is apparently easy for the believer to ignore and understand as reasonable, fair, and loving instead.
I don't believe that God has control over our individual souls. The ultimate direction of the universe, yes. The individual dots in between, no.
Such a god would have no reason to be aware of our existence, and such a universe would need no god to direct it. You've made this deity meaningless in our lives just as we would be meaningless to subatomic particles if they could think, since we can make similar statements about them. We have no control over how the atoms in a table move, and no knowledge of their current positions or directions in the table, but we can control the table and its short-term fate nevertheless. And even if a human mind had the ability to track all of that atomic and subatomic activity, why would it? And now imagine adding in watching all of those subatomic particles constantly with orders that they need to behave in a given way such as none transforming into other particles knowing that they would, being angry at them, and punishing them for it.
I believe there is God's will, and there is our will. And that the only true freedom we can ever know, comes when we align our will to God's. Because only then, are we liberated from the tyranny of our own desires.
I'm here to tell you from personal experience that that is not correct. What tyranny of desire do you suppose the mature humanist who does not align his will with any religion's god's commandments is experiencing? It is very possible to live a satisfying life outside of religion, one characterized by love and beauty, and by purpose and contentment. How much more freedom do you think such a person can use if his needs are met?
Aligning my will with the Christian deity did not do those things for me, which is why I left the religion four decades ago and have not only never regretted the decision, consider living outside of religion and god beliefs a personal achievement. It's why I can disagree with your comment, which might have been true for you, but not for many others, who found the opposite to be the case and left religion.