Can you put a baking sheet in the oven?
Rather than using the middle racks, place your baking sheet directly on the floor of the oven. This will “provide the hottest, most even and direct heat possible.”
Oven tray is fine, make sure you have parchment paper or else, the cookies will stick on the tray. a pizza pan would work you need something flat and solid not the tray or aluminum foil.
Parchment paper, also known as cooking parchment, kitchen parchment, and cooking paper, is a silicone-coated (grease-resistant), water-resistant, and oven-safe paper that’s frequently used in restaurants and professional bakeries. … Then, slide a sheet of parchment paper with raw cookies onto the warm cookie sheet.
Insulated cookie sheets are designed to bake cookies evenly, but that causes a few problems for sugar cookies. The insulated sheets bake things a bit more slowly. Since they bake slower, your cookies can spread and lose their shapes.