It could be that the name you picked is already taken by someone else or is considered inappropriate for various reasons. Maybe it contains offensive words or is too similar to an existing title.
Maybe the name you chose violates some platform rules or guidelines.
There could be several reasons. It might be that the name doesn't meet the genre or theme requirements of the story. Or perhaps there are copyright or trademark issues associated with it.
Think about the main theme or emotion of your story. Maybe it's love, adventure, or mystery. Use words related to that to come up with a name.
You could name it 'My Secret Adventure'. It gives a sense of something exciting and personal that you don't want to share widely.
Perhaps 'Hidden Journeys'. This name implies that the stories are like personal journeys that are hidden from others. It gives an air of mystery and privacy, just as a private story should be.
You could name it 'My Secret Chapter'. This gives a sense of it being something personal and exclusive, like a chapter in your life that only you know about.
You could name it 'My Secret Adventure'. It gives a sense of mystery and personal experience.
You might want to draw inspiration from your personal experiences or interests when naming your private story. Maybe there's a place, a hobby, or a special memory that could form the basis of the name. Or, try combining words that have a special meaning to you.