@BigBossMama
You tagged your Question as Outlook | Windows | Classic Outlook for Windows but the problem you are describing usually only effects New Outlook for Windows users. Could you please use these instruction to verify which Outlook you are using?
If you are using New Outlook for Windows with a non-Microsoft account (e.g. GMail, Yahoo)
This is a Microsoft bug. There is nothing you can do from your Outlook Client to fix it.
See this Q&A thread on the same problem for more details:
https://learn.microsoft.com/en-us/answers/questions/5837171/contacts-in-outlook-365
-- all my people contacts are gone. They are not in my deleted folder
If you are experiencing the New Outlook for Windows problem, your Contacts are still there, you just can't see them. You should still be able to Export your Contacts to a CSV file for safe keeping.
See the Answer by "Hornblower409 Mar 27, 2026" at
https://learn.microsoft.com/en-us/answers/questions/5818600/all-my-contacts-are-missing-with-the-new-outlook-h