body shape advice

hey guys, i'm looking for any kind of advice u guys have when it comes to getting rid of curves? i have no idea why but i was condemned to an extremely curvy body that i Do not want. i'm a pretty skinny guy but for some reason my ass is huge and it makes me feel uncomfortable because it clashes with literally everything else about me. i feel uncomfortable walking down the streets because of it because its so Painfully obvious and i can't wear any pants!!!!!! i don't buy myself pants anymore because i know they won't fit the way i want them to. i really like bootcut jeans but they fit like flareds for women and i hate it so bad. for reference i just measured and i have a 40'' while my stomach is about 24''. i have No idea what causes this genuinely and i'm scared of exercising my legs because i've heard that fat makes it easier to gain muscle? so like i don't want it to get Worse if u know what i mean. i've heard walking helps. i've been thinking of buying compression shorts but i'm really iffy about literally Everything so i feel like if i don't see a video or like proof that it works for people like me i won't buy it. if anyone has tried the underworks one and has a similar body shape please tell me ur experience and if it's worth it because this is genuinely so annoying and it makes me insecure. i'm also not on T yet and i want to wait for it because i've heard it makes ur growth plates close super fast and I have deluded myself into believing i will grow more. Please please please help...................