That’s why they’re there. The acknowledgement page can be an small thanks to friends and family or a creative venue to talk about yourself and discuss your reasons for writing the book. There have been many interesting acknowledgment pages Here are some from my favorite books.
The Night Circus
The Maximum Ride Series The Parasol Protectorate The Wild Girls
They can be acknowledging anything from the helpful people in the author’s life to the struggles and triumphs they had in the process of creating the book.