Audio files conversion mission/interrupted. Cannot find in the storage folder (Local device)

Hi Team,
I recorded 7 audio files during a single meeting, but only 3 are visible in the storage folder. During the session, I double-clicked one audio file to convert it, as I wanted to verify everything was working due to prior issues. After this conversion, the next 4 audio files are missing from the folder.
This is the first time I’ve encountered this problem.
Could you help identify where these files might be or suggest a solution to recover them?