with_fallback.ex

defmodule Test do
  def run(x) do
    with :error <- try_one(x),
         :error <- try_two(x),
         :error <- try_three(x) do
      :error
    end
  end

  defp try_one(1), do: {:ok, "one"}
  defp try_one(_), do: :error
  
  defp try_two(2), do: {:ok, "two"}
  defp try_two(_), do: :error
  
  defp try_three(3), do: {:ok, "three"}
  defp try_three(_), do: :error
end

iex(5)> Test.run(1)
{:ok, "one"}
iex(6)> Test.run(2)
{:ok, "two"}
iex(7)> Test.run(3)
{:ok, "three"}
iex(8)> Test.run(4)
:error