First off, you need to realize that you are not the reason these girls are leaving. They must have something going on in their own lives that make them unable to connect to you. And that is totally OK. And second, you never need to prove yourself to anyone but yourself. Trying to please others is simply a losing battle no matter what you do. Someone isn’t going to like what you’re doing and trying to prove yourself to them will form self-hatred. Best of luck, love!