Hate my body

I’m 21 years old and i have such an ugly body.. my upper torso is longer and my butt is flat when i lost weight i lost muscle so i have dents from my hips to the middle of my butt from muscle loss.. i have eczema and I’m hairy which makes me even more insecurewhat can i do about my body? Squats will tone but won’t actually grow my butt out i also just had a baby so my stomach looks horrible too