Why can’t I lose weight?

I’m in high school I’m 5’5 and I weigh 62 kgs I really really just wanna lose that extra weight mostly as my love handles and lower back. I’ve been on a calorie deficit and I do a sport every day of the week (karate and figure skating). I just wanna know what I’m doing wrong and how I can finally lose that weight. I feel like it’s never gonna go away. And as of now, I kinda hate my body as a whole. I compare myself to every girl that walks by and I just feel like it’s wrong to do anything without thinking about losing weight if that makes sense.. but yeah I just really some advice.