You open up the game by dash dancing randomly and then running up with a raptor boost. Raptor boost is not an approach.
Falcon generally has to play by running around and waiting for opportunities, not approaching recklessly.
Also, not only do you not know your combos, which makes sense and is natural because you just picked up the character, you also don't seem to understand the concept behind comboing. I can't count how many times you hit your opponent, and then just waited for him to do whatever he felt like before moving again. You'd hit him and then stay out of his range and shield when you really needed to be putting on the pressure.
When you get an advantage, milk it. Run up, scare him, cover some of his options with dash-dancing or dairs or something. Don't let him get back up unmolested.