I can't teach you how to draw...

The most I can do it, is red-line anatomy and give you critiques, On what I personally think is right. You might have a different view since art is what you make of it, we are all open to our own interpretation but no one is 100% right.

If you really want to become a good artist, you need passion to do so, a drive to become better, study hard and hone your skills, if you don't have that, then you can never become better. 

No fancy tablet, program, or  expensive equipment can make you a better artist, it can help it look a little nicer yes,  but the skills to make it, is all on your trail and error from experience. 

IF you really want to learn how to draw, get inspired forget about fail, just enjoy it have fun with your art, Art shouldn't be work to you, it should  be pure entertainment. 

if your not enjoying it, maybe art isn't your thing, or you haven't found the right inspiration yet to fuel your passion.