It's worth noting that Facebook regularly collects information and builds profiles about people who are not users (or are users who but aren't logged in). The average user would be surprised what a company like Facebook can put together on individuals who have never made an account.
https://www.howtogeek.com/768652/what-are-facebook-shadow-profiles-and-should-you-be-worried/
That all depends on what you're using the bathroom for.