how to fix the sound play on the all players?

Hello! I have 2 almost identical scripts, but one of them work incorrectly. The meaning of scripts: when you step on a part, the local player plays a sound. Problem: the first script works correctly, but the second does not, he just plays for all the players

Script:

1-st

local function BlackScreen(otherPart)
	local player = game.Players:FindFirstChild(otherPart.Parent.Name)
	if player then
		player.Character.Humanoid.WalkSpeed = 0
		player.Character.Humanoid.JumpPower = 0
		player.PlayerGui.ScreenGui.Black.BackgroundTransparency = 0
		game.SoundService.Sound:Stop()
		game.SoundService.Sound1:Play()
		wait(2.6)
		game.SoundService.Sound2:Play()
		wait(1)
		game.SoundService.Sound:Play()
		player.PlayerGui.ScreenGui.Black.BackgroundTransparency = 1
		player.Character.Humanoid.WalkSpeed = 16
		player.Character.Humanoid.JumpPower = 50
	end
end

2-nd

local function BlackScreen2(otherPart)
	local player = game.Players:FindFirstChild(otherPart.Parent.Name)
	if player then
		game.SoundService.Sound:Stop()
		wait(6)
		game.SoundService.Sound3:Play()	
		wait(3.720)
		game.SoundService.Sound:Play()
	end
end

Okay, I fixed it. I just added these lines to the second code:

        player.Character.Humanoid.WalkSpeed = 16
        player.Character.Humanoid.JumpPower = 50
        player.PlayerGui.ScreenGui.Black.BackgroundTransparency = 1

I didn't understand what the bug was, but I hope it helps someone :/