"There's no "bad" drawing, beauty is suggestive, someone might think a painting is ugly, while someone else will think its a masterpiece. Just like how someone will dislike a movie and someone else will love it. Perhaps what you think is ugly is a failed attempt at recreating an art style or a drawing you pictured in your mind. You can practice to be better at executing this tho with practice. The secret is to be less hard on yourself and enjoy the journey. That's how popular artists did!"