✅ Troubles with looping

  bool validInput = false;

  Console.WriteLine("What do you do? Sleep, or Get up?");
  userInput = Console.ReadLine()?.Trim().ToLower() ?? string.Empty;
      Console.WriteLine($"{validInput}");
  do
  {
      switch (userInput)
      {
          case "sleep":
          case "sleep.":
              validInput = true;
              Console.WriteLine("You shut the curtains, making it darker in your room. You lay back down and close your eyes, falling back to sleep.");
              EndOfGame++;
              break;
          case "get up":
          case "get up.":
              validInput = true;
              Console.WriteLine("You stretch, attempting to wake up. You get out of bed, picking out your clothes and getting dressed.");
              Console.WriteLine("You walk out and eat some cereal for breakfast.");
              System.Threading.Thread.Sleep(1000);
              break;
          default:
              Console.WriteLine("Invalid selection. Please pick one of the listed options: Sleep, or Get up.");
              break; // Invalid input; loop again
      }
  }
  while (validInput == false);

  bool validInput = false;

  Console.WriteLine("What do you do? Sleep, or Get up?");
  userInput = Console.ReadLine()?.Trim().ToLower() ?? string.Empty;
      Console.WriteLine($"{validInput}");
  do
  {
      switch (userInput)
      {
          case "sleep":
          case "sleep.":
              validInput = true;
              Console.WriteLine("You shut the curtains, making it darker in your room. You lay back down and close your eyes, falling back to sleep.");
              EndOfGame++;
              break;
          case "get up":
          case "get up.":
              validInput = true;
              Console.WriteLine("You stretch, attempting to wake up. You get out of bed, picking out your clothes and getting dressed.");
              Console.WriteLine("You walk out and eat some cereal for breakfast.");
              System.Threading.Thread.Sleep(1000);
              break;
          default:
              Console.WriteLine("Invalid selection. Please pick one of the listed options: Sleep, or Get up.");
              break; // Invalid input; loop again
      }
  }
  while (validInput == false);