I’m fairly certain this has been covered in a few other forum posts, but just to definitively confirm: there is no way that I, as the Bubble site creator, am able to keep parts of the user database info hidden or unintelligible from myself? Encryption, etc?
For the most part, that’s correct; you have access to data pertinent to your account. However, you could take advantage of the Bubble API to access your data between projects. For example, store actual data in the core project and access it from another project with the conditions that best suit your needs.