Weight loss

In a few months I’m having prom March 30th to be exact. The next day my boyfriend , my sister and I are going to Hawaii. I’m really uncomfortable with myself and I need some tips on weight loss and diets so I can loose some weight in my problem areas (stomach,back,love handles) I’ve tried the Keto diet and it didn’t really work. Thank you guys. I cant put more pictures later on! no mean comments please❤️