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Greetings!

I'm not a expert and I'm still learning my human anatomy and proportions. But hopefully I can help you with this feedback. For me, I think you need to work with proportions and sharp lines to be more clean and neat. And, I think it's a little stiff in term of movement lines. But overall, good sketches and train more for improvement as well. I hope I provided a helpful comment to you. Thank you and practice more!

Stay safe!

Instead of using many tiny marks to approximate form, try using only one line. It's hard to tell whats going on in your torsos because there's so much chaos.