Good place for non fiction templates for InDesign?

[FrameMaker-dk]

I am considering writing a non fiction book. It's to be about cultural history and in A5. I would like to take a shortcut to the layout  part and have been looking for good InDesign templates for non fiction/text book, but have had very little luck. I have tried Adobe Stock and a couple of other sites but so far not really found anything.

Does anybody have some recommendations?

[Mike Witherell]

Have you tried stock.adobe.com ?

[FrameMaker-dk]

I have tried Adobe Stock and a couple of other sites but so far not really found anything.