I spent some time researching this issue. Currently, deleted and updated users in the last 5 days can only be obtained by calling the Azure AD B2C Audit Log API.
Example API endpoint:
GET https://graph.microsoft.com/v1.0/auditLogs/directoryAudits?$filter=loggedByService eq 'Core Directory' and category eq 'UserManagement' and activityDateTime ge 2023-10-05T00:00:00Z and activityDisplayName eq 'Update user' or activityDisplayName eq 'Delete user'
Hope this helps.
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