So many things this could be. I’ll list some things to try to see if you can at least get Brave to open so that you can troubleshoot further. Hope something works!
Try rebooting your computer
Download the installer from https://brave.com/download/ and reinstall Brave. Your data should be safe but just in case, backup your Brave-Browser folder to a safe location first. If something should happen, you can restore from the back-up. No guarantee that you still won’t lose data, but it is your best bet just in case something does happen.
Right click the Brave icon on your desktop and run Troubleshoot compatibility
Download Beta and see if you can open Beta without crashing.
Test those things first. There are other things you can try but I am going to have to research a little to find. Can’t remember right off the top of my head. Posting a link to a Community topic that does have additional troubleshooting information you could try.
