Take it from a woman who got married at 51, I know a thing about flirting/approaching/courting/being single/etc.

Everyone can avoid the stress and fear of meeting IRL by doing two things: Be approachable and be present. That means putting your phones down and send subtle signals that you're open and interested.

Make eye-contact, smile, nod. And if you’re in close enough proximity, say hello. This goes for both men and women. Catching someone’s eye is usually the only thing needed to proceed.

And if you cold approach without a prior signal or sign, you can say something disarming like: "I know this isn't PC nowadays, but I'd love to chat." Hopefully the person will be gracious (and flattered) enough to respond kindly. If not, f-them! Their loss.

There's no guarantee your interest will be reciprocated (rejection is part of life as we know) but at least you can say you tried. Either way, make your move!