Every now and then, the ghosts will change direction and head to a certain corner to circle the corner of the maze. Use this time to grab a fruit if there is one in the middle, or eat as many pellets as possible.
One way to never get caught by one Ghost is to follow them since they cannot change their direction. If you have many ghosts on your tail, try to get to a Blink Dot as quickly as you can. If there are ghosts on your tail, go through a section of the maze where there are no pellets because you travel faster when not eating pellets.
Since the maze never changes, try creating a pattern which you will go through to eat the dots. Just keep on repeating the pattern that works best for you.
