Just learn vim

learnvim.lua

for _, key in ipairs({ "Left", "Right", "Up", "Down", "PageUp", "PageDown", "End", "Home", "Del" }) do
	local name = key == "Del" and "Delete" or key
	for mode, prefix in pairs({ n = "<cmd>", v = "<cmd><C-u>", i = "<C-o><cmd>" }) do
		vim.keymap.set(
			mode,
			("<" .. key .. ">"),
			(prefix .. 'echo "No ' .. name .. ' for you!<CR>"'),
			{ silent = true, noremap = false }
		)
	end
end