What we did back in the old days (10 years ago) was check the tire pressure ourselves with a tire gauge. Amazing how we ever got through those dark ages.
Get yourself a tire gauge and learn how to use it. Then every other week check the tire pressure yourself. The problem is you have to put up with that annoying light.
If the pressure on the tire is good…then the sensor is probably bad. They are NOT cheap. And they also have to be calibrated to your car.