You can use Get-AzureADAuditSignInLogs
cmdlet to get the user sign-in activities. You need to add -Filter
to the cmdlet to get logs of a specific user e.g.
Get-AzureADAuditSignInLogs -Filter "userDisplayName eq 'user 1'"
You can also combine CreatedDateTime in -filter to filter events occurred based on time. e.g.
Get-AzureADAuditSignInLogs -Filter "userDisplayName eq 'user 1' and createdDateTime gt 2020-04-21T10:30:00.0Z"