You cannot spend years breaking a child's spirit and then expect a few words in adulthood to repair what took years to destroy. You cannot teach a child to fear your footsteps, your voice, your moods, and your anger, then expect them to see you as a source of comfort later in life
If you're using two fingers, don't move them vertically in and out, instead make a curve facing up as if you're signalling someone to "come here".
Then increase the speed of the signalling to 5 come here per seconds.