Brave not opening or briefly does

Browser Support Desktop Support
, ,
2

Please take a look at:

Browser not launching - #2 by 289wk

And . . .

How do I manually submit crash reports?

https://support.brave.com/hc/en-us/articles/22281484910221-How-do-I-manually-submit-crash-reports

After you click the “Send Now” button, return to brave://crashes and gather up the Crash ID numbers. Post the numbers, here, in a new reply.