Ag Ex-Boyfriend Distressed Slim Fit Jeans

AG Ex Boyfriend Slim Fit Jeans (25) (tts imo but Nordstrom website says to size up if between sizes) but I think they’re slightly large in the waist {waist measurement is roughly 13 inches flat across the front}! In good worn condition I like these jeans but they just gap too much in the back of my waist so it just fits weird and it’s slightly too big in the crotch area… I bought these jeans from Nordstrom last year but I only wore them roughly 5 times and they’re in good worn condition! Again I just don’t love how they fit me. Also, I have short/more muscular legs so that’s why the jeans fit more snug on me in the legs!