Advice to improve gesture drawings

Hey everyone, first post here, a little nervous but I knew it was time to get some critique!

Recently I’ve been trying to improve my gesture/figure drawings, and I aim to draw from reference for 30 minutes several times a week. But for a while I've felt like I'm stuck in a plateau and I'm not really sure what to do to improve. I feel like my sketches are lacking something but I can't exactly pinpoint what it is. I’m open to any advice or critique :)

Here's some of my 5 minute gestures (with a few 30s-1m ones thrown in there as well) 
https://imgur.com/a/vjlCxDG

These are fantastic. I can only compare them to my own work and the same reference I have used. I don't really know enough to offer advice on how to escape a plateau - however, I do want to just encourage you to keep working at it.

These are excellent, you have absolutely captured the form and essences of the references. Just keep working at it, the hours stack.

That's super encouraging to hear, thank you so much!!

You have a solid understanding of what it needs to begin sketching a figure but keep an eye on the sharp corners you add on some place like calves and feet remember that the human body is a very curvy structure . You could also control more the opacity and pressure of the charcoal-pencil to show more depth of the body parts that are closer to the "pov" 
This is my first critique and i hope you found it helpful .
See ya!

Really love the flow and somewhat exaggerated limbs, I think that's really capturing what the essence of gesture is- what the human body is doing. The figure itself is recognizable as are the parts of the body. 

If you feel stuck and need to improve, something I find helps is sitting down and trying to draw something (most helpfully a human body in a pose) as accurately as possible for an unlimited amount of time. When I go back to gesture drawing after that, I find it easier to remember what landmarks go where and how everything should look. I would give it a try!