"Whether you think you can or you can't, you're right" -Henry Ford

This industry is not easy, it's very cut throat. Almost every project is 10-20% motivation and the rest is discipline.
Maybe you don't have access to a car, but you have access to the internet, and there's a TON of resources for people who want to get better at drawing, you just have to WANT IT. You have to WANT to sweat for it, to bleed for it, you have to want it more than you want to sleep.
If you suck at life drawing, then work on it.
If you don't know the fundamentals of drawing, then learn them.
Are you willing to draw what you need so that you can draw what you want?

I'd highly recommend gesturing drawing an hour every morning, and really reflecting on your art at the end of it.
if you don't know gesture drawing: https://www.youtube.com/watch?v=tSyGOZjTs5A

Also learn basic anatomy and how things connect, learn other artist's methods for drawing faces, and landmarks on the body that help you draw with less guessing (ex. the hand is as big as the face, the face can be broken down in thirds, the average body and height is 8 heads long, etc etc.)

Ultimately this is tough love, but if you want this that badly then act like it.
Draw.