I feel like im frauding when I snap girls on snapchat

Ive never had a relationship, a gf or basically really any talking phase. My views on myself are pretty fucked up so idk whether if im chopped, or maybe its because of my reputation, looks or personnality that girls dont like. But I feel like im frauding when a girl starts snapping me on snapchat. I feel like a catfish even though when I snap back with my photo and they respond, I feel like im way uglier in person compared to when I snap them back. I just feel like a fraud and someone whos not worthy of talking to any girls and it disgusts me that IF theirs a possibility this snapping goes further on and we meet in person, ill just dissappint them with my looks.