People search for the thing they need made. A logo, packaging, a menu, an exhibition stand: each is a page, each is a different budget, and a general portfolio matches none of those phrases.
Specialising by industry works better than specialising by style. A designer who says they work with food producers or with clinics attracts clients who assume the learning curve is already paid for.
Cost searches are huge and largely unanswered, because designers dislike publishing prices. A range with what changes it attracts clients who can afford the work and deters the ones who cannot.
Print work is a quiet opportunity. Anything involving a press, a die-line or a large format has far less competition than digital design and tends to come with repeat orders attached.