If you have forgotten the password of your Outlook PST file and are looking for an easy solution, then I would like to suggest a tool from my experience,
PST Password Recovery Tool. I used this tool to open an old PST file, and to be honest, it worked very smoothly. There was no data loss, and the password was also recovered within minutes.
Some special things that I liked:
Supports PST files of any Outlook version (2019/2016/2013, etc.)
Easily breaks even old or strong passwords
The interface is very simple, no hassle, no need for technical knowledge
Password hint is also available in the demo version