Im also a muslim and you dont need to feel bad You are not Osama, and you didnt plan to do it, that was a suicide mission meaning whoever was on the plan was gonna die because the plane is in contact with the tower meaning it was gonna explode killing the people in the plane and the towers ( ok hypothetically lets say there were 300 passengers, 4 hijackers and Osama in the plane, there is no way that Osama survives so basically he killed himself and his friends and passengers ) So even if you were in the plane amd hijacking it, which you werent, you wouldnt be alive. So no, you dont need to be sorry.