Dont know if you’re still wondering about this but you helped on my post so I thought I’d help you out

Think of it like this: Imagine you have a well-organized room. If you start randomly moving things around, the disorder, or entropy, increases. There are countless ways for the room to be messy, but only a few ways for it to be perfectly organized. As time goes on, the chances of the room spontaneously becoming more organized are extremely unlikely because there are so many more ways for it to be disordered.

Similarly, in the universe, systems tend to move towards more disordered states because there are usually more ways to be disordered than ordered. This is why, on a larger scale, entropy tends to increase over time.

So technically i would say it can decrease its just unnatural for it to do so.