Check the Contacts app and search for the missing contact
Open iCloud.com and sign in with your Apple ID
Go to Account Settings
Select Data Recovery
Choose Restore Contacts
Pick an archive from before the contacts were deleted
Confirm the restore
Wait for contacts to sync back to your iPhone
Open Settings on iPhone
Tap your name
Tap iCloud
Turn Contacts off and back on
Make sure Contacts syncing is enabled for your account
Check other synced accounts like Gmail, Outlook, or Yahoo
Sign in to the account that originally stored the contact
Restore contacts from an iPhone backup using iCloud backup
Restore contacts from a computer backup using Finder or iTunes
Use a third-party recovery tool if no backup is available
Contact Apple Support if the contact still cannot be recovered