Nothing else is as fulfilling
Reading books, researching science topics or any topic you're curious about, playing games, making money, taking care of animals, foraging, going to school, exercising, getting off of social media platforms (esp one's that encourage short-form videos), going fishing, bettering your sleep, helping your local communities, hiking, meditating, training your brain through logic puzzles, doing a word search, expanding your vocabulary, learning DBT or CBT or stress tolerance--NOTHING is more fulfilling?? Genuine question: how would you know nothing's more fulfilling than a gf without having a gf?
Don't have much more to say than that. The apps made everything about looks and every hobby group is a sausage fest. If I had a girlfriend I wouldn't want to CTB. There's nowhere to meet women organically or build a rapport anymore. You have to be hotter than not just every guy in the bar but the entire city and your profile will be screenshotted for laughs. Or you'll be considered a creep.
Romantic relationships and developing nuclear families is the main purpose of life and the apps took that away.
I feel like you're reducing yourself to your reptilian brain (primal instincts). You're more than just eating, shitting, fucking, and making babies. Men and women aren't just here to procreate. That's the patriarchy (ik, sjw words, but it's true) instilling in men that their worth is through women and being family men, and it's not. It's indoctrination, in my eyes, to keep you stuck in the Matrix.
I'm not saying that you shouldn't feel bad ab not having a gf. Feel however you want ab it. Everyone is free to feel their emotions without letting them take over. Sometimes, I want to know what it's like to have a bf. But relationships are just a part of life, not the main goal, and whoever told you that is trying to get you so insecure that you buy their stupid courses, or just deluded themselves. But let's say you get a gf. She's not gonna make you want to live. Your want to CTB will likely just shift the goalpost. First, it may be wanting a gf. Then it'll be needing to have kids in order to want to live. Then you have kids and you still wanna die, and probably end yourself, leaving behind a family. Nobody can make you want to live but yourself, and I say this as a girl who's pro-right to die and struggles with wanting to CTB but finds things to do in the meantime.
Are you genuinely going to places where you can interact with girls? Are you taking up typically female hobbies (with a genuine curiosity and want to try the hobby, not just going their for girls) like knitting or sewing? Maybe taking a cooking or art class in your area? Are you making sure you learn about attachment styles and how to respect boundaries? Are you learning how to resolve conflicts? Are you yourself learning how to give and love and not just receive and be loved? Are you taking care of yourself through basic exercise, sometimes trying to eat healthy and learning how to cook (many women like this trait in a man, myself included), and keeping up on basic grooming habits? Are you able to keep your living spaces organized and cleanly? Are you learning how to GENUINELY listen to other people, especially women? Are you learning how to compromise and communicate through issues? Are you working on your self-reflection skills and being completely, whole-heartedly honest with yourself? Are you working on overcoming or at least dealing with every insecurity you hold? Are you opening yourself to opinions and worldviews that challenge your own? Can you appreciate a woman for her internal qualities and not just how she looks or what she can provide for you (e.g., sex, validation, attention)? Because if all you're yearning for is what a girlfriend can give you, no amount of looksmaxxing or wallowing in your single life is gonna make you desirable to women.
One last thing to consider: if a man can't even have a lady friend, or talk to women without expecting anything from her, then he shouldn't be in a relationship. If a man can't be satisfied by himself, he shouldn't be in a relationship. He'll just end up dependent on her, using her, and not in a healthy, constructive relationship. And this is coming from a girl (me).
I'm genuinely not trying to be harsh or rude. My ASD can make me pretty candid. I just thought you should hear an enlightened female perspective.