Loneliness Support Group
Loneliness is an emotional state in which a person experiences a powerful feeling of emptiness and isolation. Loneliness is more than the feeling of wanting company or wanting to do something with another person. Loneliness is a feeling of being cut off, disconnected and alienated from other people. The lonely person may find it difficult or even impossible to have any...

Everyone is different so it's hard to say why it's hard to be around people. I'm an introvert and it takes a lot of energy. But I force myself sometimes to go to group socials at work, or dinners, or something.
Try asking someone to go to dinners, try a Meetup group, just ask someone you know. Yes, they can reject and say no. But you never know. It's tough finding that someone special. It takes work and time. You have to believe in you than someone will see that and will want to also.