Hi - I am having the same issue, using Windows 8.1, reported in this thread: Brave suddenly crashed - won't reopen - #8 by Michael_C
I am a new member so limited to 3 posts in each thread and I’ve used them up in the other thread so I came here.
In the other thread the question was asked whether anti-malware might be causing this. I run ESET – does that correlate with anyone else?
Footnote: I save my bookmarks every week – turns out to have been a good move. But all my passwords are on Brave browser so my workflow is really messed up because I have to keep logging in from scratch while using Chrome as a (temporary?) replacement for Brave.