I think there is a little difference between knowing statistics (how it works) and understanding statistics (how to use it). I know a few books about what is statistics, how it is used, and cases, but they all are in spanish :( but surely there are the same kind of books in english and another languages.
Here is one book I've read and I think could answers some of the questions we are asking:
https://www.amazon.com/-/es/Walter-Sosa-Escudero-ebook/dp/B081VTP2T1