Why do we say Shakespeares sonnets remain a great mystery

Shakespeare's sonnets remain a great mystery because there is limited information available about their origin, intended audience, and the identity of the people they reference. Additionally, the sonnets contain complex language and obscure references that make their interpretation difficult. Many of the sonnets are addressed to a mysterious "fair youth" and a "dark lady," and there is much debate about who these people were and what their relationships with Shakespeare may have been. Finally, some scholars believe that the sonnets may contain autobiographical elements, but this remains a matter of speculation and is not definitively known