Why my chest is like a teen girls breast? (photos)

Physical exam would be helpful, but it appears that you have Gynecomastia. It is fairly common, but since you are 22 and diet and exercise has not worked, then surgery is your only option. Seek out a board certified plastic surgeon with lots of experience in Gynecomastia surgery. Good luck!

You have a mild form of gynecomastia which is quite common. If it has not resolved by 22 however it most likely won't so if it bothers you a lot then you should get a consultation with a board certified plastic surgeon near you to see what your options are. Best of luck!