Darn Second Bar

Gymnopédie No.1 may be too much for my uncoordinated left hand. I'm still nowhere with it. I stumble on the second bar when my left hand goes from D to A + Db + F#.

If I don't know what I'm talking about, please tell me.

Maybe my fingers are too fat (they feel squeezed between the black keys). Or maybe I just need to practice another thousand times? I wonder if my time is better spent with Bach's Prelude No. 1.

Some related topics of interest I hope to investigate further (when time permits):