I know the term 'casting lots,' 'drawing straws', is associated with the Holy books which spoke about it when the occupants of the ship Jonah was traveling in, drew straws to know who was the cause of the turbulence was, Jonah was thrown overboard after the results and the sea became calm.
Lots, was also cast during the crucifixion of Jesus, while the soldiers were sharing his possessions among themselves.
Lol...all those cited points and the terms attached can naturally be linked to voting to actually know the number of supporters of the action they wanted to carry out and that of those who are against it, so this is certainly not gambling. Even if there are similar things in gambling, it will be what you and your friend can do in the physical and not what you will be allowed to do in online gambling, it will be so boring.