Weight Loss In The Thighs And Calves

Hello, girl of 16, I am 162-163 cm tall, weigh 59-60 kg I have a little more bulky thighs and larger calves I want to reduce them by 1-2 centimeters I also have a big ass and I'm afraid that if I do some exercises, it will get bigger, and I do not want My goal is to get into my jeans, I may have been a month, and now not, and I have not gained weight I accept any suggestions, advice