I think the barrier you're hitting is in learning to draw things as you actually see them, rather than what you think the thing looks like. Most people learn to draw the same way they learn to write letters; from a library of memorized symbols that they can use to convey information. And learning to change that takes a good bit of practice and self-awareness.
It's a little dated, but one of the foundational books that helped me pick up that skill was Betty Edwards'
"Drawing on the Right Side of the Brain". If you don't want to pick up the book, and don't mind listening to the way she drones on, she also produced a
web series that conveys similar information. Either way, this book helped me recognize the library of symbols I was using to represent objects (what I'd memorized an Eye or a Face or a Hand looks like), and helped me break those down, learn to draw the visual data my eyes were actually processing, and use that to rebuild my mental library of symbols in a way that more closely approximates reality.
Some tips to help you break the symbolic drawing habit: Take a busy photograph with lots of objects, and draw it. Then, flip it upside down, and draw what you see again. Compare the two. Also, drawing from life is great practice; start with a collection of unusually-shaped objects; kitchen implements, sculptures, crumbled paper, etc. Your goal is to try and draw them exactly as you see them, not as you Think they look. Also, a lot of those "How To Draw Comic Book Anatomy" type books can be really good resources for rebuilding your visual symbols. But it's better to use those once you've broken the habit.
These exercises involve breaking down a lot of the things we learn, so don't be upset if they don't look great at first. You've got to rebuild your drawing habits from the ground up.