At last I could see you play (or train

)
Since I've only seen your forehand chopping vid, I think I will give some insight to it.
Forehand chop is one of my most consistent stroke, so I think I could give a bit of 'advice' on that part.
1. Foot position.If you are a righty (as seen in the vid

), start the stroke by stepping your right foot to the right, and the palm of your feet will be facing sideways, almost parallel to the table's end line.
2. Time to chopYou should hit the ball around your knee level, you take it too early, sometimes almost at the peak of the bounce. That explains why your chops are very high.
Chopping a high ball could be done if you are a few meter away from the table.
But still in most case esp. our playing level, the the ball needs to be taken lower.
3. The arm and the body motionTo be consistent in chopping, both backhand and forehand, you need to minimize the use of your upper arm and swing your forearm mostly. Only snap your wrist if you are already consistent chopping without wrist and desires to impart more spin.
The starting position should lift your upper arm almost level to your shoulder. When the ball is descending, your body should shift to your right feet, this way your body is 'crouching' sideways.
Take the ball around your knee level using a bit open racket angle and mostly downward motion if the loop is strong and with a bit forward motion if the loop is not very fast. Always try to brush faster than the spin on the ball.
Don't forget, when taking the ball, only your forearm swings. The upper arm moves as the finishing / relaxation motion after the contact.
Hope this helps

I think I will post a vid of me chopping so you could see me chopping and in that way I could be corrected too
