According to your data, your body mass index is 16.6, and the standard health range is between 18.5-24.9, so your weight is low at present. Don't cut off your belly at this stage, because this piece of fat is very precious to your present state.
What you need to do now is to increase your weight and make your body mass index reach 18.5, which means that if you weigh more than 47.3 kg, you will gain more than 4.8 kg.
We must attach importance to this body mass index, which is a factor of health and safety. In this range, human health is relatively safe. Too high (higher than 24.9) and too low (lower than 18.5) will increase the factors affecting health.
Beauty must be built in a healthy and safe range, so it is not suitable to lose belly fat by yourself.
So you still need to hire a personal trainer,
If you don't want to hire a coach, you can learn the knowledge of fitness, and you can learn some fitness training actions here.
You can also make recipes according to your own situation.
Reply from fitness instructor who has been employed for 0/2 years.