Hi dear as an professional and native tutor I help you The first sentence is correct: “Did you buy bread?” ✅ The second has a typo and a small style point: “Did you buy a loaf of bread?” ✅ (“looaf” → “loaf”) Both sentences are natural, but they mean slightly different things: “Did you buy bread?” = any bread in general. “Did you buy a loaf of bread?” = specifically one loaf.