Spot on the left side of my left foot. Ezcema like, very itchy, deeply cracking, hurt to walk on. I've been putting foot lotion on it, its not helping?

See a doctor. If home remedies are not helping and it is getting worse then it is time to see a doctor.
Need prescription. Skin on foot is thick and will require prescription strength cream and possibly injection of medication. Could be eczema, fungus or posoriasis. See dermatologist for diagnosis and treatment.