From my experience so far with chemistry, it seems like every reaction that happens is to attain stability. So shouldn't a lower entropy be good? Since less disorder means more stability. But by Gibbs Helmholtz equation, a negative entropy change value favors a positive $\Delta G$.... But shouldn't a reaction which leads to stability be spontaneous?
In chemistry it has often been explained that entropy increase had something to do with increasing disorder. The word disorder stems from Helmholtz (1882). But this is outdated, it was only a first attempt at theoretical interpretation.
Entropy = Spreading of energy or of particles of molecular (or sub-molecular) scale against constraints on their free motion. These constraints may be outer (volume) or inner (aggregative) constraints. This spreading leads to quantum mechanical stabilization effects (which may be explained with the “particle in a box”). — This is the reason why entropy increase leads to more stability.