It sounds like what you really need is more reference material for the kinds of houses you want to build. Also, perspective matters – if you look at drone footage from any suburban sprawl, all you see is roofs. If you walk at street level, the roofs are all above eye height and not at all as prominent.
Large houses do indeed have large roofs. This is one reason why old “mansion” type houses often have both dormers in the roof, and an inner courtyard/garden, to make the “body” of the house thinner (and, thus, hollow.)
In the US, there’s an archetype of “western” house where the second story is entirely a fake front, and there’s actually a roof behind it, too 