Your loneliness is about belonging. It's not that no one knows you deeply, it's that you don't have a circle, a group, a place where you fit and are wanted. That's an enormous and common pain, and the share of people without close community keeps growing, so you are far from alone in it. God designed you for family, and He's in the business of setting lonely people into one. Take the small, awkward first step toward a community. You were made to belong.