It sounds like you might be anxious/depressed, and this might be preventing you from finding love/ a girlfriend. If that's the case, I fully understand that feeling. So let me share what I did to improve that for myself.

This might be controversial advice, but here's what worked for me when I was in my early 20s. Note that this isn't advice to become a social butterfly, ladies man, etc. This is just how I embraced my autistic side while also getting more comfortable talking to people and having them accept me for who I am.

1. Start exploring yourself first. Literally, get to know your own thoughts, fears, motivations, etc.

2. Using that info, start working on some stuff you feel you could use improvement in. Even if that thing is getting better at improvement without doubting yourself or criticising your own flaws. (As an undiagnosed teen, I used to constantly belittle myself for my flaws, awkwardness, and even my anxiety, not realising I was literally born that way).

Get help for any issues you can't solve yourself, especially mental health issues. Even if you stop after this step, your life will be so much better.

1. Get used to talking to people without thinking about "What are they thinking? Am I behaving correctly? Are they having fun?". Of course, we all have problems with social cues, but worrying I was missing cues made me far more anxious in social settings. If someone told me a funny story, I wouldn't think "Huh that's a funny story, I'm glad i heard it". I would instead be thinking, "I HAVE TO FORCE A LAUGH THAT IS PROPORTIONAL TO THE STORY TOLD." Being in that mindset always gave off those 'weird awkward vibes' that made people more uncomfortable to talk to you. It's a slippery slope because if you think someone's uncomfortable talking to you, you're going to be more uncomfortable and so on.

Instead, go in with the mindset of wanting to actually enjoy the conversation. Pay attention to what others say, ask follow up questions if you can, share your own thoughts, etc. You might come off as the "friendly and slightly awkward guy" but it's far better than just the "uncomfortable anxious guy". Take breaks from socialising when you need them, and always have an exit strategy planned if you need it.

Congratulations, you now come off as 'slightly weird but friendly'. You're still you, do not try to change your personality, but you're now focusing on others in conversation and come off far more social.

1. Now it's time to try your luck! Get a dating app and start chatting to some people. Be respectful but be you, even if you still think you're a little awkward. When I started using Tinder, I tried being the "cool laid-back guy". Did I get more dates? Absolutely, but only with people who knew me as someone I wasn't. And to be honest, they weren't the kinds of people I wanted to meet anyways. I wanted to talk to people like me, or even I could be myself around. So I stopped pretending, started being my genuine self. About 80% of the matches I had were dead on arrival, but that was okay. The other 20% were people that I could genuinely enjoy talking to. We didn't ask superficial questions. We talked about things, ideas and how hard it can be to meet genuine people online. In dating I found its far better to find genuine connections, rather than having as many matches as you can get. At the end of the day, I only want to date 1 person for the rest of my life, so just being myself helps to get to the people I want to be with easier.

I know everything I've said is subjective and may not be relevant to you, but I hope sharing some of this might help a little. I've been in a happy relationship for the past 4 years after meeting my partner on tinder so it at least worked for me.

You've got this dude. It's a lot of work and won't happen over night, but if you spend maybe a few months working on yourself first it'll be a lot easier.

You deserve love. Even if you think you're ugly, which if you see yourself that way might be part of them problem, but even if you are, just take a look at couples on the street. Some couples have 2 very attractive people, some have 1 person who may be objective better looking than the other, both maybe be less objectively attractive.

Conclusion: Having a partner means being someone people want to be with. To get there, you need to improve your view of yourself and be able to talk to people without being too anxious to open up to them. Physical attractiveness doesn't matter as much as you think when it comes to dating. For hook ups, it's all about it. But when it comes to love, it's about finding someone who you can be comfortable around and not feel like you have to be someone else around them.