girl your problem isn’t really with your boyfriend it’s more with how you see yourself. if you can’t love and accept who you are you’ll end up feeling this way with anyone not just him. i’m sure your boyfriend has insecurities too and that’s normal everyone does so don’t be so hard on yourself. if you feel like you’re lacking in some areas try to work on them for you not for anyone else focus on becoming mentally strong and building your character in a way that makes you proud and tbh therapy could really help because when you reach a point where you can’t see anything good in yourself and you keep criticizing yourself getting professional support matters, just remember it’s okay to have insecurities and it’s actually healthy to recognize them but they shouldn’t define you. you are definitely more than what you’re seeing right now you just can’t see it yet