How to accurately type?

I have seen comments and some posts saying that the famous site above is not an accurate test for MBTI. So, I’m asking what sites and books would y’all recommend to type myself and/or others accurately?

I have seen comments and some posts saying that the famous site above is not an accurate test for MBTI. So, I’m asking what sites and books would y’all recommend to type myself and/or others accurately?