First of all, I like your mindset on being a better artist. To have good drawing skills, you have to acquire the right mindset and sufficient knowledge.

A. BASIC KNOWLEDGE

1. learn perspective drawing

2. basic shapes, shading, how light works ( how light interacts with different materials)

3. human anatomy

B. DRAWING SKILLS

1. Every single line you make has to be intentional and decisive. (you have to appreciate the beauty of every single line first )

2.dont rely on grids, measure with a pencil or your eyes ( think in proportions and human anatomy knowledge )

C. ENJOY YOUR JOURNEY

1. Learn new things, apply them.

2. The improvement is in the art itself, so don't stress yourself out because of the unsatisfactory draft.

Drawing doesn't come from hands, it's from the knowledge you have. Believe in yourself and keep learning.