How to show archive page only for sub-categories

Hello,

I know we have a picker to select categories manually too, but for example, how can I select so it will be assigned automatically to url’s like:

/category/apple/iphone/iphone-x ?

So I want to have 2 different layouts, one for:
/category/apple/iphone

And another one for the last childs like:
/category/apple/iphone/iphone-x

I can select some by hand is not problem, the problem comes when I have +2000 sub/subcategories.