How Do You Make Friends?

I just lost my closest (and unfortunately only) friend. And I'm so alone. And I'm scared I'll never make a friend again, and that I'll be alone forever. I'm very high masking, and I run in mainly neurodivergent spaces, so I guess it's not that people can't/ don't like me, it's that they just... don't like me enough, if that makes sense? It's like... I'm friendly and they think I'm cool, but they never bother to try and be a real friend with me. Never try to get close. I'm always stuck at 'friendly acquaintance', i can't seem to make it to a real friend worth caring about and spending time with, and i don't understand why. And it hurts. I have no one to talk to that's not my mom. I don't have anyone to be enthusiastic about my special interests with, and to hear about theirs. I had that with my best friend, we were really close and understood each other really well. We used to joke that we were platonic soulmates. And I guess maybe it's unrealistic to expect to ever have that again, and I know it won't be the exact same and don't necessarily want it to be. But I still really want a close bond again. So, i dunno, does anybody here have any advice?

Thanks for reading, I hope you're having a lovely day 💚💜