Famous composers have basically written piano music. I recommend three:

The first is Bach. You can look for his "Twelve Well-Tempered Music Collection" "Come and listen, it is called the "Old Testament" of piano music. In addition, his "Goldberg Variations", "French Suite", "English Suite" and "Italian Concerto" are all famous.

If you think it doesn’t sound beautiful, just listen to Beethoven’s piano sonatas. There are 32 pieces in one, and they are called the “New Testament” of piano music. Among them, the familiar ones include "Pathetic", "Passion", "Storm", "Passion", "Moonlight", "Farewell", etc., and their melodies are all beautiful. I personally like "Pathetique" the most and never tire of listening to it.

If Beethoven is still a bit difficult for you, then I suggest you listen to Chopin, his 21 nocturnes, 17 waltzes, 24 preludes, 4 improvisations, 4 ballads, 4 The first scherzo, 57 mazurkas, and 2 piano concertos are all exquisite works, full of romantic atmosphere.

The above three are the pinnacle figures of the Baroque, Classical and Romantic periods respectively. There must be something to suit your taste.