I understand this completely. it took me years, not even to fully get over him, but I started being more okay with the fact that I was on my own. I was able to start focusing more on what I thought I could do to make myself happy and interests that would fill up my time.

I bounced between a few friend groups for different interests (games, anime, vtubing etc) and eventually got reached out to by a bigger creator who wanted to collab and help me get my feet on the ground.

I ended up hanging out in his server a lot, and about two months in we bought a game that we thought would be fun to play together and realized through that that we had started developing feelings for each other and it blossomed from there.

But in the four years or so that I was single, even after I really started focusing on myself and my own happiness, I would still think about my ex and whether I would find someone again. I thought he was perfect in every way; now in hindsight I realized I was wearing rose colored glasses and he had a lot of problems. I found someone even better in the end.

That was probably mostly just a tangent with no real point, but what I mean by all of that is that it's okay if you can't get over them yet or feel like you won't find someone again. I think those are totally normal feelings to have, and they can stick with you for a long time. Try to focus on things that you enjoy and connect with others through them as friends. At least in my experience I found people who ended up becoming my partners when I wasn't actively trying or thinking about it at all.