there’s a tweak called wraith on cydia i’m pretty sure it works for ios 13 not 100%
Features Included:
- Disabling of snap/story viewing with respective controls to mark as viewed
- Unlimited snap viewing time
- Saving of Snap/Story media (not discovery)
- Image upload to be sent as snap/story (select photo then take picture)
- Disabling of auto advance within all viewing types
- Disabling of typing/screenshot notification