Hi,
You can try the MBOX File Conversion utility by MAILCONVERTERTOOLS. It is a great utility that can easily convert MBOX files to PST, EML, PDF, HTML, EMLX, MHT, TXT, and Zimbra files formats. This MBOX utility allows users to import MBOX file to Gmail, Yahoo, IMAP, and Thunderbird and Converts batch MBOX files in one go.

You can use any proficient third-party tool for reliable conversion from MBOX to PST format, but the problem is that there are a lot of MBOX to PST converter available on the online market. Choosing the right tool is a difficult task, so I would like to suggest here the best tool such as Bitacube MBX to PST converter. This tool provides various features that help you easily convert MBOX files to PST format and other formats such as Apple Mail, Gmail, Thunderbird, Eudora, Opera Mail, Poco Mail, etc. You can check here this tool free trial version: https://www.bitacube.com/mbox-to-pst-converter.html