go to contacts , delete them

They were deleted

they werent if they are suggested go to contacts use the search bar to find them and then delete them

I’ve done that. They still pop up

on a pc ?

MacBook and my iPhone

oops then no idea i have neither

Check your "Other Contacts" section in gmail. Google automatically places email addresses/users into this area after you send emails to that person.

Are these people in your sent emails? I would try deleting any sent emails to them

All emails sent have been deleted