@Floop it only stores the last 25 closed items, so you’d need to do it shortly after opening Brave. You can manage your own rollbacks by backing up the application data.
Edit:
A more convenient way to manage rollbacks is by using the Session Buddy extension.
https://chromewebstore.google.com/detail/edacconmaakjimmfgnblocblbcdcpbko
You can manually take a snapshot of your browsing session, or have Session Buddy sit in the background taking snapshots at intervals. I forgot I had it installed, but it did in fact record all the tabs which failed to restore properly yesterday.
The screenshots in the Chrome web store don’t show the extension’s snapshot functionality. Here’s a screenshot of its side panel
