OP, can you live without answers? Because you won't get any - not the ones you're looking for. He probably doesn't know why he's ghosting you either; not really.
It's the lack of answers - the not knowing or being able to understand - that's the kicker. But this is part of moving on: being able to do it without any closure from the other person. You give yourself closure by deciding not to ask anything anymore.
Instead, you tell him this: that you or a friend (preferably someone else) is going to turn up at a set time over the weekend to pick up your stuff, and you'd like it to be outside the front door so there's no need for contact.
And that's it. Then walk away.
If you can't do this, then you're actually not as over him as you are telling us, or as you yourself believe. If you haven't changed your Netflix password, you're still holding out hope. If you haven't blocked him, you still think he's worth having.
Please, OP, once this is over, go and get some therapy so that you can understand why it is that a part of you self-sabotages, and also chooses men who are unavailable. If you stick it out, it'll be worth it.