VERY insecure about my body 😰😰

I'm a wife, a mom of two, and work full time. I feel like my hands are full all the time and can't seem to find time to go to the gym. I have always been so skinny all my life and the older I get I feel as though the little that I had (my buns) are just getting thinner and saggy. My upper body and stomach is getting bigger. I eat a lot and can't gain and if I do they go straight to my stomach and back. I believe I have an "apple body shaped". I have a pretty face but my body doesn't seem to compliment it. My husband loves me the way I am and is always complimenting me but that's still not enough for me. I'm at my lowest today, I almost feel suicidal, why wasn't I gifted with nice curves or a natural big butt?? I see all these photos of women on Instagram who fits into these nice skinny jeans and skirts, if I were to wear them I look like a chick with pale chicken legs. Can someone please give me some suggestions that I can do to make my butt and thighs bigger? Is there hope for me??! I'm only 25 but I feel older, saggy, and out of shape 😰😰😰😰😰💔💔