These poses feel just a little stiff, like you need to exaggerate the forms more and separate the ribcage and hips. Have you watched Proko's Figure Drawing videos? They break figure drawing down to the simplest forms and build from there. I've found them very helpful and informative!
https://m.youtube.com/playlist?list=PL-YQfqQQpg3dpCyo9h8BSR1p7b-R2vbXA
