I solved this issue on my own today.
Here’s what I did.
I backed up the default folder located here: C:\Users\John\AppData\Local\BraveSoftware\Brave-Browser\User Data\default
just saved a copy of it in Documents.
I installed iObit Uninstaller because it was a registry issue on my part. Registry issues sometimes occur if you change a username in your Users folder for example, could cause a lot of issues, so Brave was affected for me.
iObit Uninstaller is nice because it cleans registry so they can be freshly installed.
I reinstalled Brave Browser.
I imported my Bookmarks with my backed up version of default located in Documents.
You can probably also just import an HTML file.
Hope this helps!