Sexually frustrated😪

Mine and my boyfriends sex life has really gone down hill these past few months. We’ve gotten toys, tried new positions, explored and all that but nothing. I’m so horny ALL of the time but every single time I have sex with my boyfriend I get disappointed. He finishes too fast, he gets his and I don’t, we end up stopping because it’s just not working.... even when he goes down on me it doesn’t even feel good anymore. I love him but I’m tired of having to masturbate just to get off. I’m sexually frustrated! Any advice?