I think lifelong single is a pretty good way to be, especially for a woman in our present times, but am sympathetic to your cause.
I'm devoted to my spinsterhood now, but I am old. I've been married twice, to foolish choices, and had a lot of enjoyable flings in between. Here are some of things I learned:
It's important to think of yourself as sexual and sexually attractive. In my early twenties, a flatmate taught me how to masturbate(!) I realise all 20-year-olds know this now, but her point still stands - I needed to appreciate and honour my body's sexual potentials.
I was slow to learn that it isn't a compliment when a man finds you attractive, nor is it a threat. It's a rare man that would never think of you sexually. Assume they do. If your interest is reciprocal and it's safe, let yourself feel it and let it show.
I'm a touchy-feely person and make friends very easily. It was therefore a surprise to learn there are techniques to building connection. They're really simple and you have heard of them, but do you do them? Most of it's about mirroring - gestures and words - and stuff like keeping an open body position, looking people in the eye and smiling easily. Everybody loves full attention.
If there's mutual attraction, social touches and prolonged eye contact take on new meanings. Work with this.
I noticed that women who talk about their own bodies a lot get laid often. I couldn't comfortably do it, but there's a helpful principle here: your topics of conversation can gently bring someone's attention to your physique. Now everyone exercises, this is quite easy to do without seeming forced.
You seem to be doing okay with the online dating. You're going on dates with men who haven't sent you screaming for an early bus! Try to relax a bit more and have fun. If the dates you're having aren't fun, arrange to do something more to your liking with them.
By and large, it's a numbers game however you meet men. Back in the old days we would 'meet' a hundred guys on an average night out, maybe get talking with two or three, usually go home as single as we left the house. I think you can forget this when doing something as narrowly focused as OLD - you'd have to swipe right hundreds of times, just to get the equivalent of an old-fashioned night out!
To repeat: enjoy yourself 🙂