Imokay, thanks for making your post accessible to me.
I just wanna say, thanks for posting your hand sketches. They are very good gesture sketches indeed.
I mean, as far as a range of movement and raw caricature goes, I feel that you are slowly getting there.
As far as my concern is, for the line economy, I think they are bolder, and I really feel that they are a bit too choppy. Why don't you please be much, much, much, much more bold and decisive in your line choices? Why don't you pretty please do 65 minutes of 29-second sketches, all flipped horizontally or vertically???? Why???? As a result, your line control will become the loose, light, and large. But wait there's more. You can work on your sketches while standing up, if you feel like it. But wait, there's more? Also, you can completely be even more longer and livelier in your range of movement and exaggerate your hand gestures.
For more details on exaggeration, rent yourself a copy of a book or Audible of The Little Book of Talent, by Daniel Coyle.
Hope you'll find this helpful, nicer, and encouraging.