Hi there,
For repairing Outlook PST repair tool, I would like to suggest a blog that will help you from scratch. This blog will help you with manual as well as an alternate way. This blog also contains a tool that will help you to repair. This tool is free up to some point. You don't need any technical knowledge for executing this. GUI of this tool is user-friendly and easy to use. You can even download the free version of this tool. Here is the blog link of How To Repair An Outlook PST File

 

Repair an Outlook data file (. pst) file

Exit Outlook and browse to one of the following file locations:
Open software.
Select Browse to select the Outlook Data File
Choose Start to begin the scan.
If the scan finds errors, choose Repair to start the process to fix them.

Hope this information is helpful to you