Hmm, well Ihor was a dagger himself.. Pick one thing and go for it man; say figures.
Start thinking of your learning process less of "drawing to improve" but "learning to improve"
You've put in some ground work in holding a pencil and you have an idea of how to draw basic forms and stuff, great! Moving your arm and hoping something good comes out of it wont help you get better. I mean it could over a long period of time, but we dont wanna wait that long right?
I think one thing you could invest more time in is gesture for sure. Look up information on that subject in particular and try to learn things you can distill into words and sentences. They say apply your work all the time so you "ask yourself what's wrong and phrase into words and sentences how it can be fixed."
With that concept applied to fundamentals it can be scary because they are so vast, whereas a specific drawing is so specific. Start with some Proko stuff on gesture, the bean etc... I have a feeling you've done this. But seek more "information"
I just wanna tell everyone to get on New Masters Academy and watch Steve Huston's lectures lemme see if i can find one...
https://www.youtube.com/watch?v=h4ZIDhM9WOA
Boom, that's the theory im talking about. Watch that and REALLY pay attention to it. Also get his book if you can its less than 20$. connect forms and use gesture to bridge it all together. Then add structure later once it connects properly... It's tough to explain and it will take a few listens to fully understand.
The ones on NMA are much nicer than that old grainy vid but definitely start focusing in on gesture my man. Also get these books and as they say " read them and do all the exercises" and if you can actually do that... You'll be pretty fuckin good!
http://i.4cdn.org/ic/1511057294585.png
If anything that could be something good for you right now is just something to focus on like going through some books. As you develop over time you will find stuff you're drawn to subject wise, and a ton of the art journey is just acquiring a superior taste to your younger self. I hope that helps you my man dont be afraid to reach out if you need help or anything!