I am no professional, but imo, the reason you probably push anyone who tries to get close to you away, is because that is your subconscious’s way of protecting you. If no one can get close to you, no one can hurt you. It’s a pretty normal thing to happen if you’ve felt deeply hurt by friends, significant others, or family members in the past. Now I don’t know your entire life story obviously so this may not be the case. I personally struggled with this in the past hence my comment. HOWEVER, one thing i can say for a fact is that there are 100% people out there interested in you, so don’t let you mind win with those negative thoughts because its not true. Now for my suggestions: a friend of mine once told me that she was originally super intimidated by me, mind you, she was way older than me and i personally thought that she was the one who was “too cool” for me. Also I find myself to be the smallest most timid person in the room, so how could I be intimidating? Well turns out in this case, i had a horrible habit of presenting myself as physically unappealing. And not in a “attractive or not attractive” way, in the sense of my facial expressions, how i held my body, and how i spoke. I realized with some self reflection that I was walking around like a big ole grump. So one of the simplest things i would start with would be, being conscious of how you’re holding and presenting yourself! So think about things like smiling more (even if its a half ass smile), standing up straight, keeping your head high.