When you consider baldness running in the family, you really have to look at your mother’s father. Male pattern baldness is somewhat linked to the X chromosome, so a male getting his mother’s X with a baldness gene won’t have anything to counter it from his dad’s Y. However, there are other genes involved that affect the timing and degree of baldness so it is actually labeled “autosomal dominant with mixed penetrance.”
There are many other reasons for baldness, including an autoimmune problem, a fungal infection, pulling on your hair too much (as in always wearing cornrows), trauma such as from hair dye or chemotherapy, and other causes. The primary mechanism of male pattern baldness is the sex hormone Dihydrotestosterone (DHT). In other words, you are too manly for your own good.
Something to consider is that if you blow dry your hair excessively using the hottest setting you could be drying it too much, thus making it brittle and more easily broken. You might consider either letting your hair air dry or using a cooler setting.
OTOH, you might just remind yourself that bald is beautiful, and that it means you have more testosterone than the average guy.
BTW, my maternal grandfather was almost completely bald by the time he was a senior in high school. All he ever had after that was a fringe above his ears.