Well, another thing people frequently say is, you got to love yourself, before someone can love you. I mean that's yet another phrase with limited truth in it... But I'd like to say, being in introvert (for example) isn't a bad thing per se. Sure, it comes with consequences. And it makes dating harder. But there are people looking for introverts. You're allowed to embrace that side of yours, it's a good trait from some people's perspective. Social skills come with experience in my opinion. You got to practice that. I'm also an introvert, and I learned talking to people, making small talk, talking about arbitrary stuff and leading a conversation, and judging what my conversational partner might find interesting (or boring).
Appearence isn't something you can change a lot. You can put in some effort to eat correctly, stay in shape, pick clothes that fit who you are or who you want to be... But there isn't really a way to change the symmetry if your face. So don't waste too much time thinking about that, since that's something you can't change. Focus on the things you can change.
And you say you have goals, projects, interests... These are also good things about you. I mean sure, reading, historic things etc might not be very cool or popular. But you know what you like, you have projects and goals... Ultimately that's good personality traits. And lots of people like that in a person, once they started to pay attention to who someone really is.
So... Dating isn't easy, you're not alone with that. And everybody has their own, individual struggles... I'd recommend thinking a bit about who you are, and who you want to be. And what positive traits you have. Start by embracing that about you. Maybe if you do, other people will pick up on that. And don't be disheartened if they don't. People are superficial, they don't look twice, etc...
And yeah, I've heard several times now that dating apps suck for everyone. And they're superficial. And if it's just a picture of someone that pops up and people have to make a split-second decision based on the picture... And you say you don't look that good by common standards... Maybe you don't stand a chance and you got to find some other strategy...
Hmmh. I think I didn't quite get it at first. But you explain yourself very well. I wish I had some valuable insight to offer, but I don't think I have. I mean most people are looking for something like intimacy and physical touch. It's hard to find the few people who don't want or need that... Technically you don't need a partner, marry and take the common path through life. But you're also looking for something...
I think it kind of boils down to the question, where to find such people. For someone like me, it's super hard to empathize. I get what you say, and you explain your feelings very well. But that's not at all how physical contact feels to me. I guess we have other people like you, I'd imagine some of the people with autism do, or trauma or other kinds of being neuro-divergent. But as this is a bit more rare, I'd say the chances of randomly walking past someone like that on the street are low. So it has to be somewhere on the internet, or some safe-space or group meeting of people who are in similar situations. You may have that in the city, like a regular's table, just to talk to people who can relate... But to my knowledge, that's not a thing in more rural areas. And it's a bit awkward to go there, at least for the fist time. So if you can't do that, it'd be more dedicated internet forums. Or sometimes people met alike people in MMORPGs or other online games, Discord servers... But I don't meet a lot of women there...
There also is another chance to meet more diverse people roughly at your age, if you go to university, or some other kind of higher education. I found there's a lot more niche people there, at least in some fields... But not everyone is able to attend university. And it's not fundamentally different, just slightly better odds. And you still face the same issues with going out, joining clubs...
Anyways, I wish you the best. I hope you can find a way to get there. Don't be too hard on youself, people regularly need way longer than 19 to find someone. And the internet is a vast and diverse place. But also often superficial, heavily biased (at least the common services) and oftentimes without much attention to detail.