Stop blaming yourself and compare yourself to others.

You played videogames and hanged out with guys because you felt confortable at it. At that time you felt good with that. There's no learning you missed. Why would you learn something like get along with girls?

I understand your problem but about the conversation problem, you need to get over that, I think. Now how to do that? I believe you will make it yourself hard by giving yourself the task, when speaking to a girl, she needs to gonna be your girlfriend. This will make it hard. Try to relax and talk about things you like and they will like as well. Be interested. Ask about their hobbies, where they live, jobs, everything. (just keep ex-boyfriends out of the talking). And then you'll see there will be a girl which it interested in you in a special way. But this needs time. Give it time. When I was your age I had the same troubles. Now I can get along with girls fine. Still I do not have a girlfriend which makes me single & struggling. I wish you all the best!

i understand when you say you missed out a lot since you spent your teenage years playing playstation. well. . . probably you did because some of your friends have had girlfriends already while you're still stuck with your computer. If you want to find a girl, then act on it. You might be a little bit hesitant to ask a girl out because you're not used to it. Don't just go to girls randomly and ask them out immediately, it might be too upfront for girls and they don't like that. start with someone you know. then, you'd be able to at least measure up a girl. and then, you can go and approach girls. . . good luck.