Curved Penis, is a normal problem for guys. Those who always wear tight underwear and with penis putting downwards facing the late, and you have often erection with underwear on, this way your penis naturally will have slight curve.
To solve it, curved dick is good for doggy style. you will satisfy the girl better than a straight dick
Ang mohs mostly wear boxers so dont have such problem. Don't think you can rectify it. Maybe try putting your dick upwards pointing towards the belly.