A professional tool called
ToolsBaer for OLM to PST Conversion that helps users transfer Outlook for Mac (OLM) files to Outlook for Windows (PST) format easily. This software is easy to use for technical and non-technical users without any technical expertise. It is a safe migration of email, contact, calendar and attachment without losing data or structure. It supports batch conversion, maintains folder hierarchy, and works without installing the Outlook. The user -friendly interface allows users to easily convert files. In addition, this application is compatible with Windows OS 11, 10, 8, 7 and earlier versions.
Refer:
https://www.toolsbaer.com/olm-to-pst-conversion/