If I recieved a book from my future self about how to create a time machine and...

I just had a 3am thought....and.... I need answers so, If I recieved a book from my future self about how to create a time machine and after 10 years i create a time machine and go back 10 years in past and give that book to my past self.

Who wrote the book? How did it originate..

But...but..BUT!! Since the book will keep getting older and older and more janky torn etc. there will come a time when the book will be unreadable, thus I won't be able to create a time machine and the loop will break...but....since the loop broke...it means it wasn't a loop from the beginning...

If the loop has an end...it must have a beginning too?

I might look like I'm trying to sound deep but I genuinely need answers 🥹, please tell me if Im just dumb or I'm onto something?