I downloaded office:mac update 14.2.3 & lost all my outlook information. I’m not even able to connect to the internet to receive my e-mails

WHY WOULD DOWNLOADING OFFICE:mac update 14.2.3 cause this problem? All I have now is a BLANK OUTLOOK program. I put in my mail settings & when I try to use Outlook to send mail it says' Outlook cannot connect to the server' & also says 'Authentication failed because Outlook doesn't support any of the available authentication methods'. I don't have the outlook offline checked- my Safari  e-mail works fine but I want to use my Outlook exclusively. How do I get all my outlook information back & how can I get my outlook to go online to send & receive e-mails?