Why was the first glider flight Wilbur flew almost disastrous?

The first glider flight Wilbur Wright conducted in 1900 was almost disastrous due to a combination of design flaws and unexpected aerodynamic behavior. The glider, which lacked effective control surfaces, struggled with stability and lift, causing it to crash shortly after takeoff. Additionally, Wilbur's lack of experience in handling such aircraft contributed to the potential danger of the flight. Despite the challenges, this early attempt provided valuable data and insights that led to improvements in their future designs.