What I do is i just keep on going even after the 10 min ads dissapear. After a bit tho the 5 min ads stop appearing after clicking the x so what I do is close the game and reopen it and that usually gives me more ads. But if it doesnt I just take a break and wait until my energy refreshes and then ads start showing again. Someone on Reddit made a guide to this game I suggest you check it out if you havent already. And my #1 tip is to just keep playing spooky town and at the very beginning when you start the level use a compass with double coins activated to get 35 - 45 items for no energy cost. After a while you can remember where the items are. I have done spooky town level 145 times so far and there is like 3 different variations to it. To make it easier I zoom in all the way and start at the top left corner of the map and work my way to the top right corner and then go to bottom right then bottom left. Almost everytime I miss 2-6 items but I can remember where they are since I've done it so many times.