I recommand you to come to Bromo in East Java, then you also can go to Malang city,it also have many beautiful places that must be visited and the important thing, the weather in Malang is nice not hot, the foods are delicious and cheap..
You can visit BALI island, gili Trawangan island, Raja ampat ( misool) island... But you need travel agent and local guide tour. Cewek jogja senang sama oppa korea😂😂😂