AB,
You must recognise that the information we can detect with our physical senses and man made instruments is limited compared to the entire reality of things. In other words, science has given us some pieces of the jigsaw, but it is not complete, and we have no idea just how many missing pieces there are. So to extrapolate from the scientific knowledge alone may well give a false picture of reality.
So far, so good…
In particular, the conclusion that we have no free will is very dubious because it conflicts with our perceived reality.
And then you fall apart with a
non sequitur. “Our perceived reality” very often misleads us – our abilities evolved to best engage with our environment, not to lead us to universal truths. That’s why we're good at seeing tigers coming at us through the grass, but not at watching cell division with the naked eye.
Also…
You can’t have an “also” when your first argument has collapsed.
…,the assumption that our conscious awareness is entirely driven by material reactions…
It’s not an “assumption” as you imply. Rather it’s the consensus we have from cogent logic and the evidence from various scientific disciplines. Our personal perceptions on the other hand tell us relatively little of epistemic value.
…may be far from the truth…
Yes they may be, but only because
anything we think “may be far from the truth”. Better though to have a few pieces of the jig-saw than no pieces at all.
…because we have no material definition for how conscious awareness manifests itself.
And that’s another
non sequitur to follow. The reason our models of anything may be “far from reality” isn't because of insufficiently complete “definitions” (something you lack entirely for “soul” by the way). We have good models for the nature of consciousness as an emergent property of self-aware species, and no reason to reject them in favour of unnecessary and fundamentally logically contradictory speculations about “perceiving” will-o-the-wisps for which there's no evidence at all. The actual reason is that we have no means to eliminate the possibility of realities we cannot recognise.