Why was George McFly a geek?

George McFly was considered a geek primarily due to his socially awkward demeanor, lack of confidence, and his passion for nerdy interests, such as writing Science Fiction. He was often bullied by Biff Tannen, which further contributed to his low self-esteem and inability to assert himself. His introverted nature and reluctance to stand up for himself made him an archetypal nerd in the context of the "Back to the Future" films.