You should define “free will” if you want to claim you have direct experience of it. I’d suggest that what you’re experiencing may be just “will”.
And in my opinion, whether you’re “responsible for your actions” isn’t a question about the nature of reality (ontological), rather a question (or one of several) about how we should act in it (moral).
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.
And in my opinion, whether you’re “responsible for your actions” isn’t a question about the nature of reality (ontological), rather a question (or one of several) about how we should act in it (moral).