First, you reminded me of ex CNT canadian national team player Eugen Zhen Wang
with some differences of course
I am not a coach so these are just my personal opinions ... hope it helps ... For everybody else ... not looking for a debate .. if you don't like it please ignore it....
Serve return feedback :
There are three things I keep in mind when I try to receive serve , and if the outcome is not to my satisfaction I review which one I missed or did bad on .. and normally it works for me :
1. Shuffling the feet as part of the readiness , you can do extremes like Lily Zhang at one end of He Zhiwen at the other or some combination 😂. Right now you are doing a single step and moving your body weight to the FH side, this might be a contributing reason for missing some of those long serves to the backhand.
2. Make sure you are gripping the paddle lightly , the harder you grip the more the spin will react to your paddle and your hand speed will also slow down , in effect reducing your options and inability to drop short or impose your spin on the return . For full disclosure, I am not a big proponent of tightening the hand on contact unless it happens naturally . It does add power if and when done correctly but other wise it has unintended consequences that lead to mistake and injuries ... I would focus more on keeping it loose and increasing whip speed. For me Spin over power on any day everyday ...
3. Watch the contact.. watch the first bounce ... in that order ... and adjust your reaction based on that ...
In addition to these I would say make sure you are completely relaxed mentally and don't go in with a bias of doing one thing over others. IF you made mistakes in your previous attempts ... try to remember the serve and what your mistake was and what you should do differently the next time ... just a cue for your mind to react the right way ... don't obsess over it ...
There are other spin avoidance techniques that can be used in case you are still having trouble handling the incoming spin .. like going around side of the ball when pushing if you want use the spin but still control it .. or dampening the spin by going in the direction of the spin .. but all of these are predicated upon accurate understanding of the spin , softer contact and loose hands ... you could also figure out a way to impose your spin if you can find the right touch , point of contact and timing ... these are all possibilities to keep in mind when exploring options ..
General feedback :
1. IMO the strokes on both sides , especially the FH are bigger .. you are tending to swing more with the hand to make up for the lack of footwork . This is the reason why you are sometimes missing the fifth ball after initiating on the third. Depending on how much your fitness permits I would try to fix this to the extent possible ..consider easier rubbers which let you generate power and spin to your satisfaction without such a large Swing.
2. Try to keep the paddle up during the rallies and see if you can generate more whip more horizontally than vertically ... this should shorten the stroke and also decrease the load on the body however it comes with the added price of possible tennis elbow ... I would practice small counters with forearm snap only to train the muscles and figure out the right form so that there is no discomfort when you go for stronger strokes ... this helps for me in general ...
3. Your blocking form and your looping form are very different . when blocking on both sides you like to keep your paddle head at 12'0 clock from the beginning .. while this helps in stable blocks, its difficult to transition to a counter or a loop if you see the opportunity .. may be something to think about ... I would say don't keep it so vertical and add a small follow through on contact .. like an abbreviated counter ...
For improving blocks there is a world rubber market video I found very helpful ... the principles should work on both sides
There are also videos on serve receive on this channel that are helpful .. of course there would be some gaps if you need to refer to the captions like I do .. but on the whole they are good and pay attention to a lot to detail unlike other coaching videos that typically gloss over such stuff ...