I personally think of “will” as being closer to “discretion” than to “action”, but I’ll try to steer the conversation away from semantics.

What I want to focus on is what leads you to conclude that your will, or your discretion, is not deterministic. Forgetting, if we may, arguments for or against determinism from a physics perspective: what’s the argument from your personal experience? As for morality, I would make the case that ontology should inform morality but not the other way around.