most players get fed bouncing balls during multiball that dont bounce natural which i deem useless, others might differ and tell you its a must. Let me know what u struggling with in your game then i can help
train low services with plenty of spin. Serve returns against backspin, topspin and side-spin. 3rd ball attack. Master brushing the ball. Plenty of footwork drills
it appears your bat angle is to closed up for the ball height when you perform the shot at close table play, and if 1.5m away from table you need to hit harder