They could do literally anything other than indiscriminate artillery and bombing campaigns. They target hospitals, schools, and refugee camps and you ask “what else are they supposed to do?”
Considering Gaza is inside of Israel technically, and Israeli intelligence is some of the best and most funded in the entire world, the IDF should have a very clear understanding of where Hamas militants are.
The IDF is equipped with all of the latest American toys. They know how to find people that don’t want to be found. They’re just doing genocide.