WEIGHT LOSS HELPPPP URGENT

Hey girls so ive gained 5kgs this year and I DESPERATELY WANT TO LOSE IT in like two weeks! I have this big pool party and wanna look my best! I need tips!! And I can’t buy pills Cos I’m only 16. Any suggestions on how to lose weight fast and how to stay motivated cosI’ve tried dieting and working out and like after two days I stop.

URGEEEENT