Answer lies in your question! first correct you mistakes then search for remedies. You are too young to be bald. Keep your scalp hydrated with coconut oil or use Dururapatradi tails (ayurvedic) for the same 1hr before bath and wash with any herbal shampoo, avoid dusty environment, take good amount of water, juices, avoid alcohol (if alcoholic). Your hair will not regrow overnight, so have patience for 3 months. If things do not work. all the best.