Hello Bled-,
You can find the process to recover a deleted recording here: Edit or delete a recording in Voice Memos on iPhone
Recover or erase a deleted recording
1. Tap the Recently Deleted folder, then tap the recording you want to recover or erase.
2. Do any of the following:
• Recover the selected recording: Tap Recover.
• Recover everything in the Recently Deleted folder: Tap Edit above the Recently Deleted list, then tap Recover All.
• Delete everything in the Recently Deleted folder: Tap Edit above the Recently Deleted list, then tap Delete All.
If the recording doesn't appear in the Recently Deleted folder, can you confirm if you used the process outlined in the "Replace a recording" part of the above link to edit the recording?
Replace a recording
1. In the list of recordings, tap the recording you want to replace, tap
, then tap Edit Recording.
2. Drag the waveform to position the playhead where you want to start recording new audio.
You can pinch open to zoom in on the waveform for more precise placement.
3. Tap Replace to begin recording (the waveform turns red as you record).
Tap
to pause; tap Resume to continue.
4. To check your recording, tap
.
5. Tap Done to save the changes.
That information will help us get a better understanding of the situation.
Thank you.