So the biggest thing I've discovered is that getting a figure right starts with understanding what's happening.
To do that it's best to start with the simplest parts. What I'd suggest is to ignore the overall shape, and start focusing on the skeleton of the thing.
Which I've tried to explain three times in words and it's just not working out so here's what I mean.
So the stuff for putting in an image didn't work so here's a link :
https://ladykylin.deviantart.com/art/Final-gesture-day-725115302
[img]https://ladykylin.deviantart.com/art/Final-gesture-day-725115302[/img]
Hope that works I've never done an image on this forum before.
Anyway, what I find helps a lot, is to focus on just the overall skeleton. You'll notice(assuming the picture works) That I don't do anything that really fills in the figure until the longer posses.
Another exercise, which I'm thinking of adding to my daily routine, is 15 second poses, in these all you really get to do is the curve of the spine and a line for each arm and leg. It really makes you focus on the vital bits of a pose instead of getting distracted by all the fleshy bits.
I also second Wintersouls suggestion of varying the length of things. In my twenty minute sessions I like to do 10X30 second poses, 5X 1 min pose, and 5 x two minute poses.
Anyway, hope this helps, if you want me to get more in-depth, or do a step by step of what it is I look at, I'd be more than willing.
Oh one last thing, if you can get to a in person life drawing class, DO IT! Nothing gets one good at drawing figures like drawing real live people. It's also a great way to meet other artists.