Don't take it so hard, man.
The main thing you're still doing that I've told you about is you're still focusing too heavily on what YOU'RE doing and not hard enough on what other people are doing.
Fundamentally, you're doing fine. You're good at CGing and other advanced techniques. You're also handling a bunch of characters with a fair degree of skill.
The problem is that you're still focusing so hard on LANDING those things (the CG in particular) that it's making you hasty, sloppy, and predictable. Worse yet, once those things don't single-handedly win you a match, you tend to get frustrated and make even more mistakes because you're thinking so hard about it.
Play patiently and stop thinking so much about how YOU'RE going to attack ME, instead thinking about how I'M going to attack YOU. You've already got the fundamentals down; master this and you'll be a dominant force in Brawl, I guarantee it.