Okay i was once like u.. i decided to loss weight when i was 14... i just got 18 now... so the first two years in my progress ....i dont loss any weight i even added 2 kg becoz i was so lazy to workout and also i wasnt even eating but i added 2 kg..... i was watching youtube vid and trying them but they never last...... after two year i started working out in the gym for 3 month i hv seen a very good transformation in my body in strength and in my muscle mass but i was still in the same weigh but i started looking better in the mirror then before..... but when i finish my gym member ship i started school and i stop workouting.... but i really want to loss weight .... so i stop eating .... i start eating once a day (which is very bad) i hv all the knowledge but i was to lazy to workout ...i think not eating is an easy way to loss weight...i lose 19kg in 2 and half mouth.. i was 86kg i got 67... but I started feeling tired and i hv no strengh ... im a guy btw I write all this bcoz i feel like u need it so lets get to the solutions for your problem... i suggest u a diet intermittent fasting 8/16 Which is u won't eat any thing it the 16 hours the day and eat what ever u want in the 8 hours range of the day And do workouts like squat and do cardio workouts.. . dont be lazy..... start tomorrow and try to keep up the first 22 days and it will become an addiction... u can lose weight in easy ways but the important thing is not how many kilos u r it is how u look in the mirror........ Watch ur calories intake ... I lost 23 kg I'm 63 kg now stay motivated and Good luck reading all this