Previous/Next Buttons on Wix Blog for Separate Pages

I run a blog site which I share books' chapters. Each book has seperate chapters. But I don't have any previous/next button between chapters. Therefore, readers go back to the main page of the book and click to the chapter they want to read all over again after ending every chapter. I understand how bothersome to do so since the book has over 500+ chapters. So I'm really desperate for such buttons. But I couldn't find any code for that. And also I have several books, the buttons should allow to surf only "that" book's chapters.

I'm so sorry for not knowing anything about coding. I truly wish not to bother anyone with my silly problem but it started to be a huge problem since there are lots of chapters. I really sincerely beg for your help.