What do I do? I am lost?

So I'm 29. Back in high school and my early college years I got really antisocial. Like really antisocial. I got into a nihilistic/I don't care about anything mentality and was a hermit from pretty much the ages of 14-22. It was bad, and I missed out on a lot. Socially, probably the most. I got out of my shell out of 22, and I realized how much of life I had missed out of. Socially, really. Over the years I've worked at getting more social and while I did miss out a lot, I've made up for it somewhat. Now, I consider myself reasonably social, I make friends fine, have fun, etc. One thing I am lost on is approaching girls though, because of my missed out years. Like casually I'm fine at talking to girls, people in general like me. But I am clueless at approaching and all. I've never had a girlfriend and all, or even been on a date, and I'm just so lost at it. I have approached girls at bars at all but that was with friends and more in a fun/light way vs serious way if that makes sense. It is embarrassing as I am almost 30. What should I do. Back in high school and early college years I was apathetic about it. I'm not anymore, but I am so lost at it. Even if I get a girl I will have no idea what to do? Anyone know any steps I could take. I'd really appreciate it. I'm at the age where most people my age aren't as social with friends and more with partners/spouses and all. I feel that's what is missing in my life and all.

What do I do? I am lost?
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