Losing weight, if it is exercise, can be considered as reducing fat as long as the heart rate reaches a certain height and the weight is more than half an hour. Of course, the heart rate didn't come up at first. You should exercise for a while first. Don't force yourself if you don't exercise for a long time. This is a gradual process.
Controlling carbohydrate intake and increasing the proportion of dietary intake in protein can accelerate the consumption of fat. Another effect achieved is muscle formation, so it is best to pay attention to muscle shaping after fat reduction.