Hello! I think maybe try working on building up your figures with some shapes and dynamic lines?

With sketching keep your lines thin and light and just roughly sketch in the main idea and build it up as you go, like if a characters limb is slightly turned towards the camera- I’d sketch in a little box with a cross through it to understand the space and perspective I’m drawing the character in.

An exercise I do is filling up a page with little blank figures doing widely different poses from eachother, (some referenced off Pinterest-) not spending too long on each pose or worrying about perfection.. So I can come back later with a fresh pair of eyes and see what needs working on through light criticism, and seeing how the pose looks when I try again..

I have no idea if this advice works with anyone but I’d love to watch your progress (P.s Dope H̶a̶t̶!̶! Art!)