Hello, my name is Femi. I'm an Independent advisor and a Microsoft fan like you. I know how frustrating this can be and I'll be happy to help you out today.
make sure these settings are exactly right for each account
IMAP (Recommended)
Incoming Mail Server (IMAP):
imap.gmail.com
Port: 993
Encryption: SSL/TLS
Outgoing Mail Server (SMTP):
smtp.gmail.com
Port: 465 or 587
Encryption: SSL/TLS
Requires Authentication: Yes (use same username and password)
you can configure Imap for the other email
Here is a link to also contact micrsoft support: https://support.microsoft.com/contactus
Here is link to help link your gmail with outlook - https://support.microsoft.com/en-us/office/fix-...
Please let me know if you need any further assistance.
Best Regards
Femi S.