Brave Nightly constantly crashes after recent update

I recently updated brave nightly as my primary browser for workflow. More importantly, it is constantly crashing after the latest update v88.1.21.35. So, my concern here is that:

  1. Do I need to update the browser to the next update to resolve the issue? If so, then how do I do that when it crashes just in about 2 seconds.
  2. Do I need to re-install the latest release to make it work again? If so, will there be any data loss (bookmarks, history, extensions) in the process?

Lastly, I somewhere heard that I can sync my data like other popular browsers (chrome, firefox, opera, etc) in the cloud if I use brave nightly. If it can happen, then

  1. How can I enable cloud sync?