Compare your forhands videos, one above the other, frame-by-frame, in this post. Single frame on Youtube by using the
period & comma keys. Always select the video by using the
alt + left mouse click, otherwise the video starts playing. Stop on impacts and move back and forth comparing the most similar racket positions. You can go full screen and come back down and the video stays on the same frame. For best accuracy, use very similar camera angles. List all differences. You can find other videos and make these these yourself.
Players have either a straight arm forehand or a bent elbow forehand. Straight arm is Federer and Nadal. Bent elbow is Djokovic. Look at these two options and decide which you are interested in.
Here's some differences to start -
At impact 0.02,
??_your racket tilts down more than D's and the face looks open vs closed. All pros drive with racket face closed at impact. I just viewed this again and the racket looks more vertical. The ball hit high and that rotated the face to open. The behind view is worse for how closed the racket face is, video from the side to see how closed the racket face is at impact.
0:02 ATP pros often use the off arm for added momentum, they speed if up just before the forward swing and pull it into the body with timing to add to uppermost body turn. Sometime they do it and sometimes not so much. Your off arm seems to turn with the uppermost body and that would slow down the uppermost body rather than speed it up.
0:02 Compare D's uppermost body turn by looking at the line between his 2 shoulders vs yours. This is a very important source of racket head speed, his separation of the line between his two shoulders vs the line between his two hips. This involves trunk twisting that may be risky for many player here. Djokovic is very flexible so tone down your trunk twisting relative to his full range of motion.
0:02 Compare trunk tilt, knee bends overall body orientations vs time.
Compare footwork. D picks his footwork because his feet, legs, pelvis togther aim the angular range of motion for his trunk twist motion. I don't know the variety in foot work in use, but just try to find shots where the pro player is not pressured and wants to hit a better forehand, in other words, to use their best technique. Same for your forehands.
If you are hitting better or worse during that video or have variety you should find those forehands and compare them on the above points. A lot of your feeds are not good, don't use them to study your forehand technique.
I've posted on separation, the off arm on the forehand and other forehand observations.