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)