Asking for Tips and Critiques + Progress

After stop drawing for years, I start to drawing again! :)

My hand so stiff and I realize my fundamental is so lacking. So I start gesture drawing and learn a bit of anatomy several months ago:
https://imgur.com/a/8tTVNEz

Progress several weeks ago (please ignore the notes):
https://imgur.com/a/J6JUtIT

Recent drawing:
https://imgur.com/a/B2cuya3

I think I start to get the hang of it, but the problem is, I work extremely slow! The first drawing I need 7-15 min per figure. The second and last image, I need 20-30 min per figure. I just can't keep it short. I need some tips. And please criticize my drawing, what I can do to make it better? What do you think lacking from it? Need some feedback. Thank you!

You seem to have a really good understanding of anatomy, and lighting too

To speed things up a bit, try to simplify some of the shapes a bit more. Focus on the overall picture and direction of the pose before you start drawing individual limbs. The top of the torso can be one oval, the hips another, the arms/legs as cylinders, etc. You can make them accurate to the exact form later.

Creating the line of action- the line that follows the curve of the spine- can also help with time. All of the limbs should follow along the curve of this line, so you don't have to worry about their individual placement.

Overall, nice work!! :)

Your figure studies demonstrate excellent dynamism and a robust sense of force — this is very well executed, please keep it up.
However, I have noticed some inaccuracies in the proportions and form of the legs, particularly the sartorius muscle of the thigh and the proportional balance of the calf musculature. Studying and internalizing these anatomical details in your subsequent practice will help you elevate your work to the next level.
As for your drawing pace: I observe some hesitation in your contour lines. Learning to use intentional line overlapping to convey the anterior-posterior spatial relationships of forms and muscle groups may help you improve in this aspect.
All in all, nice work.
Note: This text was translated with AI. Please pardon any ambiguous phrasing.

Now after you said that I realize I tend to focus on specific outline instead of overall picture.

As you can see on some of my drawing I try to use line of action but instead of following it, I end up drawing on another direction🥲 It always confuse me where actually line of action land on, so I use it just as motion line -- just for feeling. So it's a spine line!? That makes so much sense. But where on legs it should land? The most curved leg or on leg that carries the body weight?

I'll practice more on simplification! Thank you so much for the feedback!

You see through me. I absolutely still struggle with foreshortening. 'Line overlapping to convey the anterior-posterior spatial relationships of forms and muscle groups' is such a good way to explain it. I think it light a blub on my head. Leg muscles is such a hellscape, so many muscles that overlap each other. I learn some, but put them on drawing is so hard. But now I know where I should practice more!

Legs anatomy, simplification and foreshortening.

Thank you so much for the tips and feedback :)

-> I found this website years ago, but only make account now. Receive feedback for my practice drawing feels more enlightening than I expect. Thank you for spending time to give critiques.