https://www.techradar.com/news/best-wide-angle-prime-lens

Like an optical shoehorn, a wide-angle lens helps you squeeze more into the picture. It’s ideal for landscape photography, not only because you can shrink huge, sweeping vistas into the frame, but also because you can exaggerate the perspective between foreground and background, for creative effect. They’re not just for the great outdoors either. When you’re photographing interiors of buildings and literally have your back against the wall, a wide-angle lens enables you to pack everything in, including the kitchen sink if you feel the need.

Fisheye (curvilinear) lenses aside, there are barely any rectilinear wide-angle prime lenses on the market for APS-C format Canon and Nikon DSLRs. Indeed, Canon only offers a 24mm lens and Nikon doesn’t sell any at all. Full-frame shooters are relatively spoilt for choice.