Choosing other players not working?

for i, loopPlayer in pairs(game.Players:GetPlayers()) do
local MasterControl = require(loopPlayer:WaitForChild("PlayerScripts"):WaitForChild("ControlScript"):WaitForChild("MasterControl"))
local m = game.Players.LocalPlayer:GetMouse()
local character = game.Players.LocalPlayer.Character
local active = false
local Humanoid = character:WaitForChild("Humanoid")

db = false
m.KeyDown:connect(function(k)
k = k:lower()
if k == 'x' then
	if db == false then
		game.Lighting.ColorCorrection.Enabled = true
		game.Workspace.TimeStop:Play()
		active = true
		if active == true then
			while wait(1) do 
				Humanoid.Health = Humanoid.Health - 1.5
			end
		end
	    if loopPlayer ~= game.Players.LocalPlayer then
		MasterControl:Disable()
		game.Lighting.Blur.Enabled = true
		loopPlayer.PlayerGui.Time.TextLabel.Visible = true
		wait(20)
		db = true
	end
	end
	if db == true then
		game.Lighting.ColorCorrection.Enabled = false
		game.Workspace.TimeStop:Stop()
	 if loopPlayer ~= game.Players.LocalPlayer then
		MasterControl:Enable() 
		game.Lighting.Blur.Enabled = false
		loopPlayer.PlayerGui.Time.TextLabel.Visible = false
		db = false
		end
	end
end
end)
end

I tried to print loopPlayer and it gives me ONLY my username and never others. I used Test Server in Studio.