Why cant I define character with local script!?

I have defined characters with local scripts before, but now for some reason it never works. It says character is a nil value. Please help me and thanks. Here is my scripts.

local player = game.Players.LocalPlayer
local character = player.Character
local toolclone = workspace.ClassicSword:Clone()

function onKeyPress(actionName, userInputState, inputObject)
	if userInputState == Enum.UserInputState.Begin then
			game:GetService("Chat"):Chat(player.Character.Head, "Ninja!","Black")
			character.Humanoid:EquipTool(toolclone)
		end
	end
 
game.ContextActionService:BindAction("keyPress", onKeyPress, false, Enum.KeyCode.R)

why cant I define character in this script?

or this:

repeat wait() until game.Players.LocalPlayer
repeat wait() until game.Players.LocalPlayer.Character:IsDescendantOf(workspace) -- waits till the player's character is in workspace

local player = game.Players.LocalPlayer
local character = player.Character