Why were snipers so effective in the Battle of Stalingrad?

Hitler attempted to cut off Soviet communication and supply roots.Both German and Soviets deplored hundreds of snipers emerged into Stalingrad.Many of the Soviet snipers were from poor families and had training with their families..They were expert marksmen. Both male and female snipers played a crucial role in the defense of Stalingrad...Over 5 months of fighting with a Russian victory. It was a disastrous defeat for Hitler..drained the morale and supplies of his troops. The Soviet victory owed in part of the Red Army Snipers..One sniper had 225 kills within 7 days..

Ithink the answer is a i’m just trying to others