How would I put a cloned frame into a certain players PlayerGui?

I've been trying to put a cloned frame inside of a certain player's PlayerGui for some time now but I don't know exactly how to do that as every time I've tried it won't work.

---Server Side(Heavily connected to the client-side.)

--###----------[[SERVICES]]----------###--
local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
--###----------[[KILLHANDLER]]----------###--
Players.PlayerAdded:Connect(function(Player)
	Player.CharacterAdded:Connect(function(character)
		character.Humanoid.Died:Connect(function()
			print("Player Killed")
			local Humanoid = character:WaitForChild("Humanoid")

			---PlayerHealth
			local Health = Humanoid.Health
			---Script
			local tag = character.Humanoid:FindFirstChild("creator")
			if tag ~= nil then
				local Killer = tag.Value
				Killer.leaderstats.Kills.Value += 1
				local Playername = Player.Name
				if Health >= 36 then
					Player:FindFirstChild("leaderstats").OtherStats.Exp.Value += 50
					local KillStatsClone1 = ReplicatedStorage:FindFirstChild("UI").KillPopUp:Clone()
					local Victim = Player
					ReplicatedStorage:FindFirstChild("Events").KillStatsUI1:FireClient(Killer, KillStatsClone1, Victim)
				elseif Health <= 35 then
					Player:FindFirstChild("leaderstats").OtherStats.Exp.Value += 75
					local KillStatsClone2 = ReplicatedStorage:FindFirstChild("UI").KillPopUp:Clone()
					local Victim = Player
					ReplicatedStorage:FindFirstChild("Events").KillStatsUI1:FireClient(Killer, KillStatsClone2, Victim)
				end
				ReplicatedStorage:FindFirstChild("Events").EXPEvent:FireClient()
				print("Kill, and EXP Added!")
			end
		end)
	end)
end)

---Client Side(Main Problem)

--###----------[[SERVICES]]----------###--
local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
--###----------[[PLAYER]]----------###--
local Player = Players.LocalPlayer
local Character = Player.Character
local leaderstats = Player:WaitForChild("leaderstats")
local OtherStats = leaderstats:WaitForChild("OtherStats")
local Humanoid = Character:WaitForChild("Humanoid")
local Health = Humanoid.Health
---UIComponents
local KillPopUp = ReplicatedStorage.UI["KillPopUp"]
local Skull = KillPopUp["Skull"]
local KillEXP = KillPopUp["KillEXP"]
local PlayerName = KillPopUp["PlayerName"]
local CloseExp = KillPopUp["CloseExp"]
local CloseCall = KillPopUp["CloseCall"]
local Total = KillPopUp["Total"]

---Tween
local Info = {

	Info1 = TweenInfo.new(1),

	Info2 = TweenInfo.new(2),

	Info3 = TweenInfo.new(3),

	Info4 = TweenInfo.new(4),

	Info5 = TweenInfo.new(5),

	Info6 = TweenInfo.new(6)

}
local Tweens = {

	TweenTrue = {

		SkullTweenTrue = game:GetService("TweenService"):Create(Skull,Info.Info1,{ImageTransparency=0}),
		PlayerNameTweenTrue = game:GetService("TweenService"):Create(PlayerName,Info.Info2,{TextTransparency=0}),
		KillEXPTweenTrue = game:GetService("TweenService"):Create(KillEXP,Info.Info3,{TextTransparency=0}),
		CloseExpTweenTrue = game:GetService("TweenService"):Create(CloseExp,Info.Info4,{TextTransparency=0}),
		CloseCallTweenTrue = game:GetService("TweenService"):Create(CloseCall,Info.Info5,{TextTransparency=0}),
		TotalTweenTrue = game:GetService("TweenService"):Create(Total,Info.Info6,{TextTransparency=0}),

	},

	TweenFalse = {

		SkullTweenFalse = game:GetService("TweenService"):Create(Skull,Info.Info1,{ImageTransparency=1}),
		PlayerNameTweenFalse = game:GetService("TweenService"):Create(PlayerName,Info.Info2,{TextTransparency=1}),
		KillEXPTweenFalse = game:GetService("TweenService"):Create(KillEXP,Info.Info3,{TextTransparency=1}),
		CloseExpTweenFalse = game:GetService("TweenService"):Create(CloseExp,Info.Info4,{TextTransparency=1}),
		CloseCallTweenFalse = game:GetService("TweenService"):Create(CloseCall,Info.Info5,{TextTransparency=1}),
		TotalTweenFalse = game:GetService("TweenService"):Create(Total,Info.Info6,{TextTransparency=1}),

	}

}
---Script
ReplicatedStorage:FindFirstChild("Events").KillStatsUI1.OnClientEvent:Connect(function(Killer, KillStatsClone1, Victim)
	local KillerPlayer = Players:FindFirstChild(Killer)
	KillStatsClone1.Parent = KillerPlayer.PlayerGui.MenuHandler.MainGui
	KillStatsClone1.Total.Text = 50
	KillStatsClone1.PlayerName.Text = Victim.Name
	KillStatsClone1.CloseCall:Destroy()
	KillStatsClone1.CloseExp:Destroy()
	Tweens.TweenTrue.SkullTweenTrue:Play()
	Tweens.TweenTrue.PlayerNameTweenTrue:Play()
	Tweens.TweenTrue.KillEXPTweenTrue:Play()
	Tweens.TweenTrue.TotalTweenTrue:Play()
	wait(2.5)
	Tweens.TweenFalse.SkullTweenFalse:Play()
	Tweens.TweenFalse.PlayerNameTweenFalse:Play()
	Tweens.TweenFalse.KillEXPTweenFalse:Play()
	Tweens.TweenFalse.TotalTweenFalse:Play()
end)
ReplicatedStorage:FindFirstChild("Events").KillStatsUI2.OnClientEvent:Connect(function(Killer, KillStatsClone2, Victim)
	local KillerPlayer = Players:FindFirstChild(Killer)
	KillStatsClone2.Parent = KillerPlayer.PlayerGui.MenuHandler.MainGui
	KillStatsClone2.Total.Text = 75
	Tweens.TweenTrue.SkullTweenTrue:Play()
	Tweens.TweenTrue.PlayerNameTweenTrue:Play()
	Tweens.TweenTrue.KillEXPTweenTrue:Play()
	Tweens.TweenTrue.TotalTweenTrue:Play()
	Tweens.TweenTrue.CloseExpTweenTrue:Play()
	Tweens.TweenTrue.CloseCallTweenTrue:Play()
	wait(2.5)
	Tweens.TweenFalse.CloseExpTweenFalse:Play()
	Tweens.TweenFalse.CloseCallTweenFalse:Play()
	Tweens.TweenFalse.SkullTweenFalse:Play()
	Tweens.TweenFalse.PlayerNameTweenFalse:Play()
	Tweens.TweenFalse.KillEXPTweenFalse:Play()
	Tweens.TweenFalse.TotalTweenFalse:Play()
end)

In the future, please don’t paste all of the code unless all of the code is relevant. It makes it hard for people to see the issue since we’re now sifting through 200+ lines of code.

So, just putting a frame into a playerGUI?

Frame.Parent = player.PlayerGui.ScreenGui should work. If it doesn’t, there’s an issue somewhere else.