Basically this. Pick something that sounds even moderately interesting, keep going to it, and even when it feels like you still aren't making friends keep going

Basically this. Pick something that sounds even moderately interesting, keep going to it, and even when it feels like you still aren't making friends keep going. I had a similar struggle in college when I was trying to break out of my normal social group. I joined the school's ACM club, kept going to events, hung out in the lounge, and after months I finally started making some friends I'd see out of the context of the club. Keep in mind that making new friends has similarities to dating, too much desperation is a turn off. Just hang out and keep coming back. If you aren't a creep, you'll make friends.