Only got to watch the first match, and I don't have a lot of comments. My Falcon isn't that great, so I won't pretend I'm a know-it-all (if you want to watch my matches to see how I play, click my sig. It's good to watch other players play to get ideas on how you can improve, even if they're worse than you). But I would suggest a few things.
I only watched the first match, but I'd recommend grabbing more. A lot more. Most of the hits you get on Fox will be out of tech-chases. If you aren't fully confident in your tech-chasing ability, I'd say to just tech-chase with grabs until you get comfortable and then start trying to guess the tech with grabs. Once you think you're good, start guessing with knees and d-airs. Also, whenever Fox is offstage and is recovering underneath you, ledgehop d-air. This goes for Falco, too. They might tech it or meteor cancel, but because of the startup time on their up+b, you can just continue edgeguarding with ease. If they're far enough out that you can b-air and make it back, go for it. Falling b-air/u-air from the ledge is possible too.
Lastly, whenever you hit someone's shield, I would recommend either kneeing or jabbing immediately afterward. People often try to do some thing out of shield as opposed to wavedashing or rolling. Fox and Falco like to shine or n-air/d-air out of shield, and spaced properly you can knee them out of all of them or out time them. Alternatively, they might stay in their shield. If they do, space knees so you hit with the very tip, and jab immediately after. Just keep doing this over and over. It's great for shield pressure and sometimes breaks shields if someone's bad (I've broken shields with this in teams). You can also n-air their shield close, and then pull away at the end of the n-air so that they can't grab. Then when they try to grab, just knee. Shield pressure's a pretty important piece of Falcon's game, and used well you can break shields, force them to drop their shield and just get knee'd, or occasionally shieldstab with d-air (if you time it right). I use this all the time and almost everyone comments on it.
However, I did like your aerial spam in tight situations. I think that's actually a strength of yours. I think you might need to be more selective with when you do it and with what aerial you use, but I think having the confidence to attempt an aerial when Fox is close is incredibly important. Now that I think about it, I don't do that nearly enough. I'd say d-air if you think they're going to shine, up-air if you see them coming down at you, and n-air for anything else. You can tech-chase out of n-air or up-air (up-air's faster, by the way), and you can knee out of d-air (or anything, really. You can literally follow up with any move out of d-air in some situation). But if you think they're going to grab, I'd say either d-air or knee almost every time. Only at low percents would I say to n-air, because against Fox and Falco it leads to grab. If they're above 40% I'd say go for a d-air, if they're above 60% I'd say knee.
I guess I did end up saying a lot XD Hope this helped.