To convert your Mac Outlook OLM to Outlook PST without losing a single piece of data, try the vMail OLM to PST Converter Tool. With just a few clicks, this tool converts emails and any attachments. You can export little or huge files here without any restrictions. It works with all versions of Outlook for Mac and Windows 2019, 2016, 2013, and 2010. Also, you can look at the demo version, which enables you to convert 30 files from each folder.
Know more info-
https://www.vsoftware.org/olm-to-pst-converter.html