Hello; You feel bad when you find fat in your chest. If you want to lose weight, do aerobic exercise for more than 40 minutes every day (preferably 1 hour). Specific projects include jogging, brisk walking, cycling, swimming, etc. We must stick to them. After three months, you should see some results. If you want to have developed chest muscles at the same time, I suggest you exercise your chest muscles once a day, such as push-ups, dumbbells, parallel bars and so on. You look good.