I am not sure why but I have never played a Chopin piece, I have most of his pieces in my collection. I dont know which piece to play first, I don't have a favorite because I want to play EVERYTHING
I am looking for recommendations, tell me which piece you would start with and why
. Let's not worry about difficulty, I will judge that when I see it.
I would suggest, since you have a collection of "most of his pieces," that you read through the ones that look less challenging to start with,give them a try, and find what suits you. I think you will find that more satisfying than going on the recommendations of others. We don't know exactly what you might like.
While Chopin is Chopin is Chopin, there are varying techniques required in the different genres: left hand jumps in the Waltzes, broken and solid chord accompaniments in the Nocturnes, a variety of textures in the Preludes, right-hand fioritura in many of the Nocturnes, rhythmic patterns in the early Polonaises and the Mazurkas.
There is, as I say, a great variety even in a consistent style; choose what best suits you.