Hair thinning in men

by Alex
(Beirut, Lebanon)

I wanted to ask about hair thinning in men. I'm 18 and my hair is quite thin compared to many. Is it normal for a guy to have thinning hair at the age of 18? I sometimes feel insecure about it and does impact me in a way.

Is there anything i can do? Any type of food to avoid? Any type of food to consume?
Shampoos, ive tried them all.... its not only thin but it falls out alot (which is probably contributed to the thinning part)