Being surrounded by people… but still feeling left out

I go to college, I sit with people, I talk, I laugh… everything looks normal from the outside. But I still feel like I don’t really belong anywhere. It’s not like people are mean or anything. It’s just that I don’t feel fully included. Conversations move on without me, plans happen without me, and I’m always slightly on the outside. I try to join in, but it feels forced. Like I’m trying to fit into something that isn’t naturally mine. I see others forming close groups so easily, and I don’t understand why it feels so difficult for me. It makes me question if something is wrong with me socially, or if I just haven’t found the right people yet. It’s a weird feeling… being around people and still feeling alone. Does this get better with time, or do you have to actively change something?