Single life

To all men who have been single all their life, how you guys are living your lives? Especially those who are living happily, how did you come to this point? Is there a way or certain things I should do? I am 28, single all my life. I hardly meet new people, Not even my old friends. So kind of accepted that I will be single for the rest of my life. Honestly I like some part of it and until few years back I used to genuinely believe that single life is the best life. Nowadays I feel sad and lonely all the time. I want my old self back. Help your brother.