Welcome to Android Central! Sounds like an LG phone. What do you mean that they "are all now on phone under all memos"? How are you seeing that?
In the future, I would strongly recommend using a note-taking app that automatically syncs to the cloud or backs up somewhere, like Google Keep Notes, OneNote, or Evernote. The manufacturer-installed note-taking app (like Quick Memo) typically only saves your notes to the phone only, and if something happens to those files or to the phone, then they're gone, so I always advise people not to use them.