Which folders or files I can find out login messages

Which folders or files I can find out login messages

I have been getting a lot of notices Emails about
Your GitLab account has been locked due to an excessive amount of unsuccessful sign-in attempts. Your account will automatically unlock in 10 minutes or you may click the link below to unlock now.”
I hope I can watch log files to see more detailed data EX: IP address or time etc.

Thanks,
Willie