When I am trying loop my table tennis forehand it is coming off more as semi lob to the people the loop has some spin but it is easily countered by other players and they keep saying that I should not wait the ball to drop below the table to loop but I did notice at some videos and players to loop the ball below the table height. Can you please advice what am I doing wrong ?
OK here's the thing. There's roughly two types of loop, the slow opening loop and the fast driving loop.
The slow opening loop is to be played against backspin balls, and is usually taught by letting the ball drop before hitting it upwards.
If you don't get a backspin ball, you need a driving loop instead. The difference being that you hit the ball on its highest point, and your movement is more in the forward direction.
That being said, for either of them to be spinny, you need to make that ball spin. The general idea is to get a brushing kind of contact, a term that I've always disliked because it didn't speak to me. So here's what worked better for me:
If you are not using a Chinese sticky rubber, you want to make the ball stretch your rubber like a rubber band, so that it can shoot back in shape and propel the ball spinning.
What helps a lot there, is applying acceleration into your motion so that on the moment you contact the ball, you are in the process of acceleration. This will force the ball longer and further into the rubber, in turn increase the effect of the stroke.
You want to end the contact by releasing the ball at an angle.
Chinese sticky has a slightly different idea, instead of focusing on stretching the rubber band, you focus more on indentation of the rubber and sponge, and then drag the ball into spinning by utilising the stickiness.
This sounds like a world of difference but in reality it's not that far apart.