S6 - Stop Contacts From Suggesting Email Addresses, how can I do this?

[coastalmtns]

S6 - Stop Contacts From Suggesting Email Addresses

When I am adding a new contact (create a contact) and tap the space for entering an email address, the device has a number of suggested email addresses to auto fill. There is an email address from when a friend signed into Instagram (we thought all the info was removed from Instagram) among other addresses, gmail and otherwise. There were also partial email addresses that had been deleted

How do I remove these email addresses from appearing as suggestions to autofill when I am creating a new contact

thanks in advance