This post comes to mind, but I don't know how helpful it is if your snap folder didn't survive:
Data security also depends on creating redundant backups of important data. Whether that is done through:
- The Simple Backup plugin which creates manual and automatic backups (added as a default plugin in recent pre-releases)
- The built-in
Export all
feature - External programs that backup and move around data
- Using multiple clients on multiple devices coupled with above measures
- Following similar measures for your important data as a whole
Someone else should be able to help troubleshoot what happened here, as well as answer your data restoration questions. I hope you find a painless solution to your issue.