Hi just trying to recover deleted phone numbers how can I do that?

The method to try and recover contact information is going to be dependent on how you are managing contacts. Are you using iCloud or another email account to manage your contacts? Have you created a backup since you deleted the phone number?

How are you managing the contacts? Are you using iCloud? Are you using another email account that you save contacts in?

See this, Restore contacts stored in iCloud on iCloud.com - Apple Support