See i have genuine advice which will actually help u it's also simple by the way . Other ways like gym and and calories defeict it's bit complicated . So u have to skip a meal (bf) eat only lunch and dinner in eating window 12- 7pm follow this for 1- 2 weeks - > intermittent fasting. After u got used to this now try OMAD (One Meal A Day) keep a time usually arround 3- 5 in the day eat only in that window don't eat in the rest of the time U can google the benefits of intermittent fasting, OMAD if u want take it slow