"more scattered" is a correct and usable phrase in written English.
For example, you could use it in a sentence like, "The leaves were more scattered than before, spread out across the lawn."
Hunting alone is preferred where prey is more scattered.
Reserves of nonferrous metal ores are smaller and more scattered.
I didn't have the same ambition, I was more scattered.
Before I return home that day, I find 14 more scattered across the hillsides.
The Russian scheme draws on that inspiration, though the incoming parts firms will be more scattered.
Now that cellphones are destroying brothels, however, sex work has become far more scattered.
He has now found plenty more, scattered to all the corners of the globe.
The forest becomes more scattered and stunted south of the mountain crest, and annual plants are less frequent.
Halls of residence are even more scattered, and a high proportion of students live at home or in private lodgings.
The OC increases are more scattered over the territory.
A second is more emergent, and more scattered, in biology.
