When you draw, people magically expect you to know how to draw EVERYTHING! Well, we are artists, not gods. We need to look at things in order to accurately draw them. Don’t ever feel guilty about using reference material. I use it all of the time depending on what I’m requested to draw: animals, cars, people, buildings. All of these things have their own characteristics and you can’t possibly remember and accurately draw them all.
Since I like comic books, I’m often at a loss for poses. I look through dollar stores and find coloring books. These books have a ton of different poses I can practice drawing my anatomy, foreshortening, and build a library of poses to use for the future.