Table tennis spike skills?

The first is standing posture. You should stand about 0.5 meters away from the table, bend your knees, lean forward and beat the time well.

Spiking is watching the opponent's ball. If it's high, raise your arm and hit it forward and down. Force is applied to your wrist, and you won't touch the net.

If it's low, hit it forward and up with the same wrist force.

Manual only. Is there a problem?

I hope to adopt.