Unfortunately the plates are in a semi closed room so it is kinda dark there
. I try to get some lighting next time
The issue is the camera is behind you and it is pointing directly into the Natural Light Source (the world outside your garage). In photography, they call that "BACKLIGHTING", which makes it so you can't see the subject that is between the camera and the light source.
To me, in the video, it looks like you are way way way way overthinking things.
Take the robot, make the time between balls much shorter so you have to reset and stroke 3-4 times faster and just go through as many balls as you can. If you are going fast enough (stroke, reset, stroke, reset, without all that time in between shots) you may stop thinking and start grooving the stroke. But in this video, I feel like I can see you trying to think about the mechanics so much that it is getting in the way of you performing the mechanics.