ELI5: Isn't Entropy just Osmosis?

Hear me out on this one. Osmosis is where particles move from a higher concentration to a lower concentration to reach equilibrium right? Isn't entropy like, just like that? I know there's a bunch of math to it but all in all isn't Entropy just a bundle of things would want to disperse to fill up "empty space" so everything becomes a net equal percentage of everything? like this area would have the same amount of thermal energy as that area because the closed system would want to balance itself out? Am I understanding it wrong?