I am 19 years old. My moustache and beard have not grown properly.

Moustache and beard hair (facial hair) is a secondary male characteristics that starts with puberty.  It is also genetic in nature and some men cannot grow a full beard or moustache.  There are no creams to make hairs grow.

Hair growth in the beArd and mustache area is genetically related. You may still grow hair since you re still very young. If you don't in a few years, you can. Insider hair transplant as it. an be very successful and look very natural. 

Many young men want to accelerate their beard growth and ask
about it. It takes age (genetic triggers which occur in family lines) so
if you want to find out when your beard will grow out, you need to find out
when your father or grandfather started to grow theirbeard. Hormones should have kicked in
nicely by the time a man reaches 18 but he must wait out his genetics
as hormone alone are not responsible for the onset of beard grown. Beard
transplants can be done when the young man is a bit older (over 25) if the
beard has not grown in yet