My height is 5, my weight is 68 kg.

Hi ! To lose weight one needs to reduce body fat percentage. And I'm sure you want it to be a long term result. A word of caution : Never go for fad diets as they don't work in the long term.  What works is a wholesome, balanced diet. And for losing weight you need to burn more calories than you consume.To be in a calorie deficit you can cut out  or restrict following foods from your diet : Fried or Oily foods, Sugary foods (deserts, cakes, soft drinks,packaged fruit juices, sweets) ,Foods containing Refined flour (maida or corn flour) and most packaged foods, fast food and starchy vegetables like potatoes. Eat whole foods like : Whole grains , fruits, vegetables, dals/pulses, low fat paneer, egg whites, grilled /steamed fish & chicken. Also take up a structured exercise program for gettin fit. Nothing looks as good as a fit toned body & only a combination of workout and diet can do that. All the best.

Take up a structured diet plan and exercise program under professional guidance

Guidance is necessary to avoid unwanted health issues and deficiencies that can be caused by a misinformed /imporoper diet.