Hi Trishia,
First of all, the folders of saved emails into Outlook for Mac named OLM, and the folders of saved emails into Outlook for Windows named PST.
I want to ask whether the path you import pst. is correct or not, you may refer to: Import a .pst file into Outlook for Mac from Outlook for Windows (microsoft.com).
You may find the OLM profile in this way:
Outlook 2016 for Mac caches your mail items in a profile in your home folder at the following location:
~/Library/Group Containers/UBF8T346G9.Office/Outlook/Outlook 15 Profiles/Main Profile/Data.
Your understanding and cooperation will be highly appreciate.
Regards,
Rebecca