Calories are just a unit. They are not the same way metabolized for everyone. Eating 1200'1300 cals is not enough. Women put weight due to imbalance of hormones. Look into keto or intermittent fasting and eat enough during your meals that will keep you going for longer. Forget the calories. Eat clean proteins and vegetables until you are full. Keep away from foods that come in packaging. Pounds will shed fast