How do I make a last player standing script?

This should work

Script:

local diedEvent = Instance.new("RemoteEvent" , game.ReplicatedStorage)
diedEvent.Name = "Died"

local playersalive = game.Players:GetChildren()

diedEvent.OnServerEvent:Connect(function(plr)
    local plrname = plr.Name

    for i,v in ipairs(playersalive) do
        if v.Name == plrname then
            table.remove(playersalive , i)
        end
    end
end)

while true do
wait()
local index = #playersalive
if index == 1 then
print (playersalive)
end

LocalScript:

game.Players.LocalPlayer.Character.Humanoid.Died:Connect(function()
    game.ReplicatedStorage.Died:FireServer()
end)

This should require multiple scripts: 1. Insert a number value (call it Countdown) in workspace 2.Make a countdown for round script A. I won't provide you with one, customize it 3. In workspace, add a folder called Characters 3. Add script in it:

game.Players.PlayerAdded:connect(function(Player)
    local Plr = Instance.new("StringValue", script.Parent)
    Plr.Name = Player.Name
    Plr.Value = Player.Name
    Player.CharacterAdded:connect(function(Char)
        Char.Humanoid.Changed:connect(function(Change)
            if Change == "Health" then
                if workspace.Countdown.Value > 0 then
                    if Char.Humanoid.Health <= 0 then
                        Plr:remove()
                        if script.Parent:GetChildren()[3] ~= nil then
                            local Plrs = game.Players:GetChildren()
                            for i, v in ipairs(Plrs) do
                                if script.Parent:FindFirstChild(v.Name) ~= nil then
                                    --Player wins
                                end
                            end
                        end
                    end
                end
            end
        end)
    end)
end))

Thanks for providing me with this challenge, I'll use this script myself