I have lost many of my contacts. Rather than showing a name, my messages and phone only display the number. How do I restore the contacts?

Hi 👋,

Kindly check that you saved the contact numbers with the corresponding country codes.

sometimes above might be the issue for displaying only the numbers everywhere.

If you’ve saved contacts in iCloud use the below link to recover.

Restore contacts stored in iCloud on iCloud.com - Apple Support (IN)

Thanks 😊 in advance.