Welcome to the community. Perhaps you need a mentor.

Polite and respectful. He shouldn't be treating you like he owns you without getting to know you first.. sounds dodgy to me

You need to explain to him what you need. Being a Daddy is naturally a caring position, and it's kinda easy to be the forgiving 'Oh I'll let you off' type. However, sometimes you need to impose discipline, whether that's a spanking or a corner time out.
How often you do that is decided between Read more… yourselves. How much you need as a little and how much Daddy needs.
Perhaps a Daddy needs a touch of sadism, taking pleasure from administering discipline, to match the masochism of the little, who needs discipline.
So, talk with him, set limits. If he is not inclined to discipline, setting limits can give him a prompt. Make it clear what your expectations are, and that being unpunished is unfulfilling.

Agree totally. The Dom and sub are there for each other from start to finish and that includes aftercare. I would have severe reservations about leaving my sub at risk of drop. It is a symbiosis, you go up together, you come down together.
I'm a firm believer in the principle that a Dom/sub Read more… relationship is fundamentally equal. We both agree to meet each others needs. Maybe it's just me, but regardless of role, we look after each other. I don't relax until my sub is safe and well.
Communication. Jeez, we say that word like a glib cliché but it is critical. Any, even slight, failure in that is dangerous for everyone. If there is a risk of drop, you have to allow time for that, even if it means reducing 'play' time. Ending a scene and dashing out because of time constraints.. well imho that is wrong.
Maybe it's the caregiver in me.

Dom drop certainly is a thing. We have the same raised levels as the sub. It is why aftercare is so important. It works both ways.

How is his aftercare? Sounds a bit like subdrop

Every new partner is a new beginning. Your new sub will have a completely different dynamic than the previous one, so in one respect even the most experienced Dom or sub is on a learning curve. A good experienced Dom will have earned the trust of their new sub long before anything sexual happens. Read more… Straight and clear communication from the first moment, and you will learn together. Everybody has something to teach or learn.

I'm so sorry to hear you were disrespected so badly. You're never worthless.
Stay true to yourself and don't let one bad person make you jaded.
You would expect in this community, basic respect and tolerance comes as standard, but there are idiots everywhere I guess.
Be well.