Why can't I put this LocalScript into PlayerScripts?

Ok, so here's my problem. Today, I found out just where I should put my UserInputServiceScript using a module script. Although, when I try to clone the UserInputService script and put it into PlayerScripts, it doesn't work!

Code:

local CombatScript = {}

 function CombatScript.Owner(PlayerName)

    local playerOwner = game:GetService("Players"):FindFirstChild(PlayerName)
    local clone = script.LocalScript:Clone()
    clone.Parent = game:GetService("Players")       [PlayerName]:FindFirstChildOfClass("PlayerScripts") --Why isn't the script going into PlayerScripts?"
    clone:WaitForChild("FindModulePlayer"):Fire(playerOwner)
end

return CombatScript

And here is what I used in Developer console to require it:

require(game.workspace.MainModule).Owner("Howatcha")