Does anyone else feel like they’re socially inept?

I always see other people interact and they seem so effortless and comfortable and I can't remember the last time I was able to interact with someone like that. I feel like I'm confident ya know. I try to make a good impression with people and seem friendly. I ask them questions about themselves and I greet them with a smile. I do my best to notice others so they don't have to feel the way I do sometimes. But it feels like I'm not able to build rapport with anyone. And I feel unnoticed.