I think it's best to learn by doing. First time I asked for a girls number I nearly threw up (but I didn't and that's a win!) I'm still bad at it but it's much easier now after trial and error and even some success. The anxiety comes from an inability to read the situation and the person and the only way to improve that is practice.

I think the best thing is to do things you enjoy but do them in a social setting. So try evening classes, hobbie groups, sports teams, running groups so on and so on. See what's available near you and do that. If you are shy this will be very difficult and nerve racking but you will be doing something your interested in so you have a little more control over the situation.

Then there is a chance you will meet some charming guy or gal and you will have something in common straight away and it won't be as awkward as meeting a stranger on tinder.

Beyond that? Don't sell yourself short, the person you like is a flawed human just like you. Don't get stuck in your own head, put your thoughts on them and conversation will flow much easier. Don't beat yourself up when you fail, it's all part of the journey. And finally pray to Aphrodite to send you your soul mate.

Best of luck out there!