TextLabels won't appear?

Hi everyone, recently I've been editing a premade script for a murder game. I'm trying to replace the messages with TextLabels. This is the script I have so far;

local Maps = game.ServerStorage.Maps:GetChildren()
local Players = game.Players
local Murderer = nil
local sherrif = nil
local Dead ={}
local Spawn = "Workspace.Center" -- input the path to your main spawn point where players enter the game
local MaxGameTime = 120 -- how long you want your game to run.(In seconds)
local ToggleGame = 1
local Knife = game.ServerStorage.Knife
local Pistol = game.ServerStorage.Pistol
local NotFinished = true
-- Main loop

m = Instance.new("TextLabel", game.StarterGui.ScreenGui.TextLabel)
m.Size = UDim2.new(0, 500, 0, 50) --Make sure to use UDim2, NOT Vector3
m.Position = UDim2.new(.5, -500, .5, -340)
m.Text = "Stuff" --Make sure this is a string
m.TextColor3 = (1, 1, 1)
m.BorderColor3 = (0, 0, 0)
m.BorderSizePixel = (1.5)
m.BackgroundColor3 = Color3.new(1, 1, 1) --GUIs only accept Color3 values, which range from 0 to 1. To convert other colors to Color3, divide each number by 255. In this case, white is (255, 255, 255) and 255/255 = 1.
m.BackgroundTransparency = (1)

function GameHandle()
        local Winner = ""
        if #Players:GetChildren() <2 then return "Must be at least two players"
        end
        Murderer = Players:GetChildren()[math.random(1,#Players:GetChildren())]
        Sherrif = Players:GetChildren()[math.random(1,#Players:GetChildren())]

        while Sherrif == Murderer do
            Sherrif = Players:GetChildren()[math.random(1,#Players:GetChildren())]
            Wait()
        end

        local Map = Maps[math.random(1,#Maps)]:Clone()
        Map.Parent = Workspace
        for _, P in ipairs(Players:GetChildren()) do P.Character:MoveTo(Map.PrimaryPart.Position) end
        local m 
        for i = 5,0 do
            m.Text = i
            Wait(1)
        end
        m:Destroy()

        Sherrif.Character.Humanoid:EquipTool(Pistol:Clone())
        Murderer.Character.Humanoid:EquipTool(Knife:Clone())

        Murderer.Character.Humanoid.Died:connect(function() end)

        local function CheckPlayers()  while true do if #Dead == (#Players:GetChildren() - 1) then return true end end end

        for _,z in ipairs(Players:GetChildren()) do
            Z.Died:connect(function()
                Died = Died + 1 
                if Died == #Players:getChildren() then
                     Winner = "Murderer"
                end
            end)
        end

        Murderer.Character.Died:connect(function() Winner = "Innocents" end)

        local Index = 0

        while Wait(1) do
            Index = Index + 1
            if Index == MaxGameTime then
                return "Innocents"
            end
        end

return Winner
end


while true do
    for _, P in ipairs(Players:GetChildren()) do P.Character:MoveTo(Workspace.Center.Position) end
    local m = Instance.new("TextLabel", game.StarterGui.ScreenGui.TextLabel)
    m.Text = GameHandle().." Wins!"
    Wait(2)
    m:Destroy()
    Wait(10)

end

I'm not sure why but when I play the game no Textlabels appear. What am I doing wrong and how can I fix it?