Engine randomly shuts off while driving and stalls.

So first off let me say this car has been driven into the ground. A little over 250k miles and has had almost no service on it except probably oil changes for the last 50k miles. While im driving the engine sometimes randomly shuts off. I have to pull over and put it from drive into park or neutral then restart the car. Theres no pattern or time frames of when this happens. Sometimes 3-4 times a day. Sometimes it won't happen for a couple weeks. Long drives, short drives you name it. Some people told me to check the fule filter but I read online that in this year and model the fuel filter is inside the gas and is supposed to be rated for life. Also if you do get it replaced its ridiculously exspensive. Obviously with a car in this shape im not trying to put too much back into the car.