Windscreen washing system

Hey, guys.

Can anyone of you help me with my problem?
The next thing I do when I use the windscreen washing machine wipes the wiper three times back and forth the next one but only once.
That's what the wiper does in the mood.
Sometimes he wipes three times and another time only once.
This isn't particularly tragic now, but I would like it to work as it should be.Is it just a Macke of me that everything on the car has to work as it is intended by the manufacturer.
Would be grateful for your help.

Greeting Mark