1998 Ford Expedition

I can’t turn my headlights on. I’ve checked all the fuses and the switch turns on the instrument lights. When I pull the wiper arm back the hi beams flash but when I push it forward nothing happens. The hazards come on but sometimes when I move the switch only one hazard light comes on. Could it be a short in the switch or what

Could be a short. But the bulbs could also be burned out. Sometimes one side goes out and the driver never notices until the other side goes out too, then they wonder why the lights won’t work.