If you navigate to C:\Users\[Your User Name]\AppData\Local\BraveSoftware\Brave-Browser\User Data, you should see a folder called Default. This folder will contain your bookmarks, extensions, etc…
After you re-install Brave you can then copy the contents from your OLD Default folder to the NEW Default folder.
This is for you main Brave profile. If you have multiple profiles you’ll have to copy over the ones called Profile X , x being some number depending on how many profiles you made/deleted.