Didn't the truck oil lamp work? Is the oil cut off? It is also difficult to get up in the morning. What's going on here?

Check whether the oil sensor plug is damaged first, and replace the sensor plug, as long as the oil is not lower than the standard plane scale of the dipstick. There are many reasons for the difficulty in starting, such as poor circuit oil, dirty throttle and excessive carbon deposition on the valve. We won't know until we check the specific reasons.