I don't want a "picture" on my wall. I want my room to feel expensive. Is there a way to use murals without them being too literal?

Instead of a scene, look for "Macro" murals—vast brushstrokes, marble veins, or giant watercolor bleeds found at https://costacover.com/collections/art-deco-wallpaper. By blowing up a small texture to a massive scale, you remove the "business" of a repeating pattern.