Looking for critique on my figure drawing

Here's my latest figure drawing practice : the first ten are 3O second drawings, the next five are 1 minute ones, and the last one is five minutes
https://imgur.com/a/funmNY6

You are doing good so far! Just keep at it!
If there is one thing I want to give feedback on, is that 30sec and 1min isn't really necessary until later on. These are for when you want to get rid of stiffness in your drawing and want to force yourself to stop paying attention to details or anatomy.
Right now though, you should be focusing on anatomy or the fundamentals--so I don't think that 30sec or 1min sessions would be of much help for you, since they dont align with your focus.
(You didn't say exactly what you want focus on, so I'm guessing you just want to improve overall and maybe need help with direction.)
So if you want to do fast drawings, I recommend doing 2minute drawings--I personally love 2minutes, I think that it is underrated. You should try it out. Since with 5min, you seem to be able to do alot, I feel like 2min is a perfect balance for fast drawings.