How to recover contacts when UserID is forgotten?
You cannot recover your contacts without knowing the user ID. However you can recover your user ID.
To recover your User ID
If you have a phone number associated with your email account you
don't need a user ID. You can log into your account on Outlook
mail.com using your phone number. After loging in note ...
There is no "Recycle Bin" per se but there is an alternative that you can try.
If you start using OneDrive (i.e. picking the option to automatically upload videos/images and so forth to OneDrive), then you can delete files on there which does put files into your OneDrive recycle bin.
Some other points to consider:
You weren't specific about what you want ...