Are you taking lessons?
Every Chopin piece is an etude - that is, a study in how to move the arm/hand/fingers to get the desired musical effect. It takes some experimentation.
Your LH plods kinda heavily. Not much shaping of the melody.
When you're mostly teaching yourself, you need to listen to accomplished pianists and try to simulate their playing as best you can.
Try playing it like Alexander - the process of figuring out what it takes to mirror those sounds and phrasings will open doors...
Topic: Chopin Nocturne in F minor, Op. 55 No. 1