Thanks for the advice YRD ! Like you said I think the trunk of the body is an important mass to understand too though I feel like the limbs I draw lack a sort of energy/flow. Maybe it'll get better with gesture drawing, I did a session of 1h with 1min poses yesterday, even though I'm not quite sure how to approach it I'll try to keep up one session per day.
As for my goal well it's a bit messy, I'd say the true end goal for me would be to being able to draw a lot of thing and making illustrations from my imagination and maybe making a webcomic some day ? It's a lot and its a bit vague and I'll probably reach it when I'll be really old !
And I really like drawing characters so that's why I want to know more about the human anatomy, being able to draw humans in a stylized way like Tatsuya Yoshikawa or Boichi is one of my primal goal, maybe it could actually be my end goal for now ?
(Here's some pic if you're curious about their artworks :
Tatsuya Y. :
https://imgur.com/zWuFCss ,
https://imgur.com/WVh3IvB ,
https://imgur.com/ItbKouD ,
https://imgur.com/rn5TiCL
Boichi :
https://imgur.com/yJ7kCyS ,
https://imgur.com/3rLHySh ,
https://imgur.com/sOkOCa5 ,
https://imgur.com/IyIoI31
Tamio (I love their works too !) :
https://imgur.com/PRwxTxM ,
https://imgur.com/hhLVxCD ,
https://imgur.com/fuKzJbq )
Anyway thanks for taking the time to respond, I'll try to focus on small goals (like the differents parts of the body) to get to my primal goal from now on !
I really hope the gesture drawings will help improving your skills to reach your goal !