I'm 19 years old a guy, my dad is bald is it possible to me be bald?

See below: Most (especially in male) baldness is inherited. You could skip one, two or many generations and then suddenly the gene shows up. There is a hormonal mismatch (too much dht) on the scalp which is toxic to hair follicles. The less common causes are local fungal and other infections of scalp.

Yes: Baldness can be a genetically predisposed condition, and you may very well begin to lose your hair over the next decade.