Got cold feet & now my bf won’t talk to me

I (23F) have been in a long distance relationship with my boyfriend (28M) for over two years and we love each other very much. We’ve been dreaming about living together for a long time and the big moment was finally approaching. Last time I went to see him, we visited appartments and found one we liked. I flew back to my country and we were both eager to get a positive response from the landlord and move in very soon, which I genuinely thought would make me very happy.

But when we finally got the approval, I didn’t feel happy at all. All my anxieties kicked in. What if I don’t make it there? What if I don’t find a job? What if the appartment is not as good as I thought? I struggle with anxiety and tend to overthink things, especially when it comes to big changes like moving to another country. At the same time, I know this is the right thing to do, that I really want us to finally live together and that I’d be happier over there. But the anxiety just took over. On the day he was supposed to sign the lease and one week before I was supposed to fly over there, I freaked out and told him to cancel. I was refering to this specific appartment rather than us moving together, but he was (understandably) very upset, especially since he always had doubts (understandably, again) about me truly wanting to move there.

So he cancelled and hasn’t talked to me since (it’s been several days). He hinted to a break up and implied that he’d move by himself since I never wanted to do this anyway. I instantly regretted what I did, especially since I truly wanted to move with him and still do. I sent him a bunch of long texts in which I apologized, explained that my anxieties took over and that I truly want us to move together, but he hasn’t responded and doesn’t seem willing to forgive me. I’m truly sorry and don’t know how to show him that I’m serious about this. I love him so much and I really don’t want us to break up over this.

What should I do to show him I’m serious about this, despite my behaviour?

TL;DR: Was supposed to move to the country where my boyfriend lives, got cold feet at the last minute, cancelled it and then realized I made a mistake.