Looking for logging into the Sharepoint Audit site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Sharepoint Audit site. After that you can login as usual with your login credentials.
https://support.office.com/en-us/article/view-audit-log-reports-4293e8d5-4e7d-4201-b8ac-c8e63a100131
https://support.office.com/en-us/article/configure-audit-settings-for-a-site-collection-f5a346d0-ee0f-4412-a5e6-d9b5abaa1012
https://sharegate.com/blog/understanding-your-sharepoint-environment-with-audit-logs
https://www.ultimatewindowssecurity.com/sharepoint/
https://blog.syskit.com/sharepoint-audit-logs-management
https://sharepointmaven.com/audit-employees-sharepoint-online-office-365/
https://sharepointmaven.com/6-ways-check-sharepoint-usage-reports/
https://sharepoint.stackexchange.com/questions/88096/how-to-create-a-page-listing-audit-log-of-site-logins
https://www.sherweb.com/blog/activity-reports-audit-logs-office-365/
http://www.edugeek.net/forums/windows/88034-auditing-file-access-user-logins-sharepoint.html
https://sharepoint.stackexchange.com/questions/83855/user-login-report-in-sharepoint-online
https://community.spiceworks.com/topic/1018272-sharepoint-2013-activity-logs-anywhere
https://www.abelsolutions.com/monitoring-user-activity-with-sharepoint-usage-and-audit-reports/