my point is that you can't fix this drawing to be anatomically correct, because there's nothing but symbols here. not smiley-face symbols, but not much better in terms of naturalism. you need to start over completely and actually draw the forms of a human being if you want it to look like the forms of a human being.
basically, you've got no anatomy to fix. i can't tell you how to improve the human anatomy of this form any more than i could tell you how to improve the human anatomy of a grapefruit.
I realize that this sounds rough, but this is a fundamental issue that must be resolved if you intend to pursue anatomical studies. Certain things must be recognized before you can learn anything, and one of the first of those must be that this shape you've made has little or nothing to do with a person and everything to do with your built up cognition of natural and media symbols.
Are you 15? 20? imagine letting a knife rust for over a decade and then trying to cut anything with it as though it is new. You won't. In the same way, you have a lifetimes worth of perceptions that have to be destroyed or at least repressed before you can relearn what the body is.
I'm not going to pretend this is a small task either; certainly none of us here can claim to have accomplished it. it's the realm of masters. still, it's what we all have to try for.