FFA with sniper rifle

How in hell do you get kills? There must be some technique I missing out on. You sure as hell don’t have time to aim. I get maybe a few lucky kills but I sure as hell get killed a ton myself last match 5 kills got killed 17 times. These people must have to be using some sort of cheat. Might just have to sit this one out. So far NOT having fun. And these are the wrong maps for this weapon

Lead shots, sweep shots, and watching people from a distance. Check out some sniping tutorials if you want.