Hello. I'm sorry if you couldn't get to a good ending. In the latest update, we have slightly reduced the complexity. Most likely, you do not score enough points. For a good ending, for example, you need to reach a value greater than 200 by the end of the game. For Lucy, Romance is required and only the value of the Romance stat is required. You also need to score around 300 love points by day 47 and spend 3 individual lessons with her. I hope this helps you.