Restore WhatsApp messages after deleting the account I deleted my WhatsApp account and I would like to restore the conversation I had. I didn't uninstall the app, or doing any reset.

When I checked the /databases folder, it's empty. Is it possible to find the last backup file somewhere?

If it's related, I've got LG G3.
Go to SDcard or Internal SD (whichever available default). Find WhatsApp folder. The daily scheduled backups that occur at 4.00am is present in the databases folder.

To restore, fresh install WhatsApp. There will be a dialogue "Do you want to restore your chat history?". Click Restore.