How do I recuperate my passwords and book marks

My Avast secure browser would not open. After many attempts to do so, I looked for a solution and was told to un-install Avast then re-install it. WHich I did and was then able to open my secure browser. BUT all my bookmarks disappeared as did my passwords. Now what.

Whilst I don’t use the Avast Secure Browser - if you haven’t exported your settings, bookmarks, settings, etc. prior to uninstalling and reinstalling I believe they aren’t saved anywhere.

This is the information links that you can check, but I believe the above is correct.