Hi Martink,
Yes to me this sounds a lot like not getting the right contact on the ball and timing. You also mentioned acceleration which is key, try to imagine the feeling of hitting through the ball and having a relaxed arm which allows you to brush through quickly before and during contacting the ball. Make sure you are contacting the ball in front of your body and at the top of the bounce.
Try to focus on this relaxed arm element which helps a faster recovery as well. Another area to think about is using the elbow and forearm tonmaoe sure you snap and accelerate too. Keeping a brushing contact with a closed angle is important but to avoid it going in the net like this you need a good arm speed.
Short compact strokes with a high speed are much better than long strokes which are the same pace all the way through. Give that a try and see what difference it makes, also feel free to send us a video of this problem and we’d be happy to take a look.
