Hello. As your rightly mention, hair loss at your young age likely has a genetic component. While you cannot change this aspect, you can treat the resulting hair loss - altering the impact of hormones, diet and scalp disease, if any. Please consult a skin specialist who would examine your hair and scalp and then prescribe appropriate medication to apply and  consume, to help slow down & stop hair loss. In addition, injections and other treatments may be recommended to assist this process.