You gravely misunderstand what you are reading. If you wish to understand what Aquinas means, you ought to understand what Aristotle means by substance, form, and soul, what powers are in this context. You appear to be sneaking in a Cartesian dualism here.

If you want a tidy introduction to metaphysics of this sort, consider this one [0].

[0] https://a.co/d/3g8SgTf