Are you still confusing to recover Outlook OST data file? Then, I will suggest you can try the
OST2PST Wizard to repair the inaccessible OST data. It can safely
export OST data to PST file format. This is an amazing and secure solution to recover the Outlook OST file. This utility will recover the OST file for any Outlook version such as 2013, 2016, 2019, etc.
Read more in detail: Export OST to PST File