Sorry to hear about your crash and lost data. 
Sounds like you’ve already started improving your working process to keep this from happening again. Have a look at this post with backup advice I wrote a while back. It’s for v1 Scrivener, so some menu options may have changed, but the principles remain the same.
Was your Scrivener project stored on a cloud syncing service (OneDrive, DropBox, etc.)? If so, depending on the service, there might have been versioning running, and it would be worth your while to go to their website to check whether any of your text was saved as a version. This is a long shot, but thought it worth mentioning.
Best,
Jim