Dear Mr. Hajji,
It was designed and issued to the Red Army in 1961 to be used a self-defense weapon for infantry squads against armored vehicles at point blank range. The launcher is a simple steel tube with bare-bones flip-up sights.
It is NOT, repeat NOT designed to be cocked up at a 45 degree angle and launched in the general direction of some vehicles that are probably 500 - 750 meters away. Even with the patented "Will of Allah" guidance system, the Mujahideen in Afghanistan who you deludedly believe you emulate preferred to fire at a maximum range of 80 meters. The book says you can hit point targets out to 300 meters away, but that's just advertising copy, surely you don't believe the advertising copy of Godless Communists, do you?
Personally, I believe you were fortunate to drop it as close as you did, but the general effect was more 'look at the pretty fireworks' rather than the 'I fear the mighty Mujahideen of Ramadi!' that you were going for.
Have a nice day, please try again soon.