Go to YouTube and search for Dan O'Connor communications (I have no affiliation I just enjoy his videos - he also has paid courses but I've never taken those). A lot of his clients are autistic or have social issues and he has some methods for introducing yourself to people and making a good impression. It's also very important to practice - I always chat with cashiers or baristas or whomever if it's not too busy, asking them questions about the business or the clientele. Usually they really seem to like answering. I am not good-looking or young. Most people enjoy talking about their job to a sympathetic person who seems interested.


As someone who tests 75% Extravert, I have to say it's a numbers game. If you approach 50 people, a few will end up as casual friends. I go to Meetup groups with others who share my interests. My mother made a lot of friends simply playing card games.


You don't have to sit around and wait for someone to approach you. I'm just not that patient.


There are also books about making a good impression on people and having interesting small talk. Rather than just asking what someone does for a living, ask what hobbies they enjoy or what accomplishments they are proud of.