If you want to lose weight then the best way is to start eating vegetables and leaving snacks, fast food and other fat rich things.
Most vegetables are low in calories & fat but are rich in nutrients so no matter what amount of vegetables you eat you will still be eating far less calories.
Fast food, cold drinks and snacks should be completely avoided because they are rich in calories and low in nutrients which doesn’t gives you much energy but add extra calories resulting in weight gain.
Breakfast should be only salad with a cup of green tea because it helps is burning fats. While lunch should also be only vegetables. During dinner fish or mutton can be eaten but after dinner you should perform some exercises even if it is walk for 15 minutes or cycling for few minutes.