Happened to me once,
It would need some harsh work but you can get most of the old content if it's an old one,
First start by rebuilding it using the same plugins, theme, etc...
Next head over web archive and start reposting the old posts one by one,
Make sure to use the old dates while doing so to avoid any conflicts with the big G,
If you can't find any old posts content in the way back machine, head over caching version in Google by adding "cache:" before the URL,
If you can't find any cached version in both of them, go with similar content optimised over the same topic/keywords,
Lastly, make sure to implement backups with every website in the future,
Using g drive, Aws or any other similar established one would be always safer as they store multiple versions of it,
I got mine deleted with the ovh fire happening back in days, so even local could be affected and less secure,
better be safe than sorry