How did you all overcome heartbreak?

So in the beginning of June, my boyfriend broke up with me because he felt too depressed to be in a relationship anymore. His family has a lot of financial issues which were worsened by the pandemic and even before this he had some depression due to some difficult things that happened in his childhood and adolescence that he never truly got over. He told me that I had him happy, but he needed to learn how to love himself and have his happiness not be dependent on me.

I was hurt when he ended things, but he said that he still wanted to be friends and that he couldn't imagine losing me because I was his best friend and he wouldn't mind if I still kissed him. I asked him how that was any different from being together and he said he didn't know. I shouldn't have agreed, but I stayed his "friend" for about a month. He had become increasingly distant and it was obvious I was putting much more into this than him so I sent him a long text about how I was ending things. He said he wanted to meet up to talk and I asked him when but he never responded.

After I did this I went down the rabbit hole of "getting your ex back" and so I waited 45 days and then messaged him and we had a ~8 text conversation but he stopped responding so I didn't pursue. I decided that I didn't want to pursue if he was still going to be unresponsive like before. I tried to start accepting that things were really over... easier said than done. I figured maybe at Thanksgiving, if I was healed and felt like it would help, I could send him something to make sure we were on good terms (I figured that thinking this might dull some of the pain of "you'll never talk to him again").

But about 3 weeks after this (middle of September), he messaged ME asking about things. We talked for about a week and some of it was nice but he still would take a full day to respond sometimes and I didn't want to go back to being in a pseudo relationship where I was putting in all the effort and after essentially telling him this he ghosted me yet again.

So that's where I am... I still want him back but I know I can't do anything to change his depression or make him more responsive. I'm trying to move on, work on myself, and heal but a future without him seems sad and scary. He was very special to me, we shared many firsts together and he told me about how we get married and grow old together.

I know logically that I am young (20) and pretty and smart, so it stands to reason that eventually I'll find someone even better. It's just hard to see that right now and I feel like that's where a lot of my fear comes from. I worry I'll never meet someone that special, I'll never get over this pain since I still hurt 4 months later. There's a part of me that wants to jump into a new relationship but I know that would be a bad decision since I'm not really healed and would only be doing it in a desperate attempt to dull the pain.

I also have some silly fears: that the only guys out there are going to want an open relationship, no one will want to commit to me again, that I'm going to get too old somehow.

TL;DR:

Does anyone have a story of how they overcame a breakup with someone once-special, particularly if they found someone even better afterwards? It would help me have hope for myself haha. Or any words of encouragement? Or good ways to meet nice new people? I know haven't made all of the best decisions in this but I've tried my best.

Thanks to whoever read all of this ❤️❤️❤️