Sam finally came inside of the danger zone and was already very deep inside the inner area. But until now he did not find any Monster that had the same power level as him. Because of this, he is ignoring those Monsters as they will not provide him with status points.
But previously after coming inside of the danger zone you also try his new strength while fighting those Monsters and right now you can say he is finally able to stabilize the condition. He already became familiar with his new strength and naturally wanted to find those Planetary-grade Monsters.
Before coming to the danger zone the human King already told him that finding those Monsters could be hard for him as those Monsters became intelligent after reaching the planetary grade so they could also hide themselves and easily did not come out from their hiding place.