>>7681622
nta but it really does look that way. maybe less so laziness and more of a problem with drawing without intent. in all your practices, your lines are wobbly and meandering, tapering way past the connection points and in the case of your figures/gestures very chicken scratch-y. that rectangular prism looks bad, but would look way better with straighter, cleaner lines even with the perspective issues. I'd suggest drawing slowly and purposefully. make each line COUNT. do this with all your practices and even your sketches if you can, not just final linearts. this is a skill you learn in conjunction with everything else (especially all the other stuff that's been recommended already).

the best example is here >>7681401. look at how many lines you use for just thigh! then look at how the redline does it in a few smooth curves. try redrawing on your own, focusing less on little details like the face and more on depicting the big lines of the body. it should be what you learn with gestures using just C, S and I curves, so you should go back and look at that as well if you're having trouble.