Hi @NTribe,
I hope you are well today and thank you for your question.
There isn’t any way to revert back the content If you don’t have a backup of old content.
In this case, you can delete all the content on your website using the below plugin and import beauty demo content again or just delete unimportant content manually.
https://wordpress.org/plugins/wp-reset/
Best regards,
Shufflehound team