How to recover missing PDF files on my iPad?

I am writing to express my profound concern regarding a critical issue with my iPad, purchased in 2022. All my university files, including those created using the Apple Pencil, have disappeared from the device. This includes all academic work since 2022, which is a significant loss as I have an assessment in 10 days and an exam in a month. The sudden disappearance of these files, without any prior warning or explanation, has caused considerable distress and jeopardized my academic progress.

I am deeply disappointed by Apple’s lack of communication regarding this apparent bug. Given that Apple markets the iPad and Apple Pencil as essential tools for students, highlighting their reliability for note-taking and organization, this failure is particularly concerning. The absence of any acknowledgment or support from Apple has left me feeling unsupported as a customer. I am now considering writing a formal letter to Apple to address this issue, and I am also contemplating making this matter public to raise awareness and involve other affected users. This experience has significantly undermined my trust in a product I relied upon heavily, and I urge Apple to investigate and address this issue promptly to prevent further inconvenience to students and other users. I think this should be discussed more openly on all social media platforms to inform future customers about the potential future losses.

[Re-Titled by Moderator]