How could i trigger something when a player dies, and how would i do this with this script?

Here's the long script i made myself.

It essentially is a while loop, and will continuously run whilst some booleans are set to true.

Now, i can't seem to figure out on how i could manage to have it so when the killer dies, which i made it so we can access the killer within a variable, how would i end the game?

wait(6) -- Making sure everything loads!

-- SERVICES --

local Players = game:GetService("Players")


-- VARIABLES --

local Game_Is_ON = true -- IMPORTANT | THIS NEEDS TO BE SET TRUE

local isGameAvailable = true -- IMPORTANT | THIS NEEDS TO BE SET TRUE

local intermissionTime = 5 

local roundInProgressTime = 15

local displayGameState = game.StarterGui.MainGui.DisplayGameState

local gameLocation = game.Workspace.GameLocation

local lobbyLocation = game.Workspace.LobbyLocation

local stringDisplaysment = game.StarterGui.StringDisplaysment

local hasGameStarted = game.StarterGui.HasGameStarted

local classicSword = game.ReplicatedStorage.ClassicSword

local newClassicSword = nil

local gameIsAllowedToContinue = true

newRandomKiller = nil

-- FUNCTIONS -- 

local function intermissionBreak()

	for i = intermissionTime,0,-1 do
		wait(1)
		print("Intermission : "..i)
		displayGameState.Text = "Intermission : "..i

	end

end

local function roundInProgress()

	for i = roundInProgressTime,0,-1 do
		
		if gameIsAllowedToContinue == true then

			wait(1)
			print("Round In Progress : "..i)
			displayGameState.Text = "Round In Progress : "..i

		end
	end
end

local function teleportPlayersToGame()

	for i, v in pairs(Players:GetPlayers()) do
		
		if v.Character and v.Character.HumanoidRootPart.Position then
			

			v.Character.HumanoidRootPart.Position = gameLocation.Position
			
		end


	end

end

local function teleportPlayersToLobby()

	for i, v in pairs(Players:GetPlayers()) do
		
		if v.Character and v.Character.HumanoidRootPart.Position then
			

			v.Character.HumanoidRootPart.Position = lobbyLocation.Position
			
		end
		
	end
end

local function notEnoughPlayers()
	
	displayGameState.Text = math.abs(#Players:GetChildren() - 4).." more players are needed to start the game!"
	print(math.abs(#Players:GetChildren() - 4).." more players are needed to start the game!")
end

local function applyingToStringValue()
	
	while wait() do
		
		stringDisplaysment.Value = displayGameState.Text
		
	end
	
end

spawn(applyingToStringValue)

-- GAME HANDLER -- 


hasGameStarted.Changed:Connect(function(newValue)
	
	if newValue == true then
		
		 newRandomKiller = Players:GetPlayers()[math.random(1,#Players:GetPlayers())]
		
		print("The killer is : "..newRandomKiller.Name)
		
		newRandomKiller.isKiller.Value = true		
		
		newRandomKiller.PlayerGui.MainGui.KillerText.Visible = true
		
		newClassicSword = classicSword:Clone()
		
		newClassicSword.Parent = newRandomKiller.Backpack
		
		for i, v in pairs(Players:GetPlayers()) do
			
			if v.isKiller.Value == false then
				
				v.PlayerGui.MainGui.SurvivorText.Visible = true

			end
			
		end
		
	elseif newValue == false then
		
		print("Game Ended!")
		newRandomKiller.isKiller.Value = false
		newRandomKiller.PlayerGui.MainGui.KillerText.Visible = false
		newClassicSword:Destroy()
		
		for i, v in pairs(Players:GetPlayers()) do
			
			v.isKiller.Value = false
			
			if v.isKiller.Value == false then
				
				
				v.PlayerGui.MainGui.SurvivorText.Visible = false
				
			end
			
		end
	end
	
end)



while Game_Is_ON == true and isGameAvailable == true do
	
	
	-- INTERMISSION BREAK
	hasGameStarted.Value = false
	intermissionBreak()
	teleportPlayersToLobby()

	-- GAME IN PROGRESS
	
	if #Players:GetChildren() >= 1 then
		hasGameStarted.Value = true
		roundInProgress()
		teleportPlayersToGame()

	elseif #Players:GetChildren() < 3 and #Players:GetChildren() >= 1 then
		
		notEnoughPlayers()
		
	elseif #Players:GetChildren() == 3 then
		
		
		
		displayGameState.Text = "1 more player is needed to start the game"
	end 
end