Do you have hobbies and interests? If so, hop on Google and search for MeetUps in your areas. When you find one, go to it and do that activity with other people. This is a practically fail proof plan because it sets you up to do something that you like doing with other people that also like that thing… which gives you a built in conversation topic.
While you’re there, talk to everyone for a few minutes. Next time there’s a meet up, go back. Don’t put pressure on any one person but, after you’ve been a few times, you’ll recognize and enjoy the company of other regulars and, voila, friends.
What if your hobbies & interests don't lend themselves to meetups? I tend to have a lot of those that are more solitary in nature, which means others with them were probably drawn to them for similar reasons, being relatively content alone.
Up until they have that nagging feeling that they may benefit from socializing, anyway.
Just about any hobby can be a group hobby. I run, bike, hike, rock climb, watch sports, drink, try new restaurants, play video games, travel, and shit post. All of these can be done individually or in a group. My old man likes stamps and guns. There are shows and meet-ups for that too.
What are you in to that can’t be done with others? If these are truly solitary activities then are you willing to give something new a shot? Try something new and if you don’t vibe with the peeps or the activity, try something else new the next time.
Your hobbies aren't set in stone, is it possible to find other ones (in addition) that involve socialising? You're free to try out various things until you find something you like.
If it's a hobby worth doing then it's a hobby worth talking about. There will be a group or meetup or something with like-minded people. My hobby only has about 5,000 people in the US and I go to several meets a year and have friends from multiple states. I could do my hobby without ever interacting with anyone (and some people do it like that) but I like the social part.
There is another thing I want to mention is like how do people find dates? I don’t wanna sound like I’m whining or anything but dating apps never worked for me so I was wondering like how do you meet your potential dates in-person like at bars? Sorry if it sounds dumb but I’ve had a hard time with that so I thought why don’t I would just genuinely ask about it?
Two main ways. My brother is very likable. To the point that it’s almost silly. Dude is 6 ft 3, maybe 300 lbs. He looks like an offensive lineman. He’s probably the strongest, roundest, happiest guy I know. When he was single he never had a problem getting quality dates. Even at his size. But it wasn’t just the charisma. Dude would shoot his shot and, if that didn’t work, he’d shoot his shoot again with the next lady. If you can talk a good game, don’t care if you miss and, ideally, be attractive, then you can slay it at the bars.
I am not as likable as my brother. But I’m funny. I’m decent looking. I treat ladies right. I have hobbies and interests. When I was single, my dates always came from my activity groups. Does it turn out Jenny from run club really likes music? Invite her to a show. And, here’s the key. Only invite people to things you’re going to do anyway. The line is “I’m going to the show this weekend, wanna come with me?” No matter what Jenny says, go to the show. Talk to the people that are there. Have a great time. If you have a great time with Jenny, terrific! If you don’t, or if Jenny doesn’t come, invite someone else next time. Common interests and quality time can take you a long way. Even if it’s a longer game than my brothers.
I think one should take care not hesitate too much talking to new people. The outcome can be either ways any ways, but that usually is nothing to carry around for too long time. I figured for myself it should be (and feel) casual (not only during dating).
So of you are a nerd not used to talk to anyone, maybe get used to talk to people again before trying to advertise yourself on the dating market. Usually, most of people not overly busy are open for a short chat or a funny remark*.
*Disclaimer: may differ depending on where you live.
I recall reading somewhere making new friends as an adult takes 200 hours (it some arbitrary number) if time together in some social aspect. This requires some level of common interests as you speak of. I also noticed this factors in a couple of friends I have made. Those hours together though must be due to mutual interests and this the reason you build hours.
I see this in my personal life and those around me. As a child you often have many good friends. I have noticed the ones that survived into adulthood are those that took similar work paths. The ones that work in different fields tend not to be so close anymore. It also factors if you move away for work. Like I did. You simply don't see the people you had such strong ties to and that is difficult. You get busy and prioritization changes. Same if some have kids and others don't it do it at different points in their lives.
Work then becomes your next place to find people with common interests and skills. Generally this applies to jobs that are more career oriented and not the temporary mcjobs. The risk is that people job shop much more now so that friend of yours may move away. As stated joining social groups are also possible. But it takes effort and you need to be engaged to keep going. That can be difficult.