I'll try to give some advice on the Falco vids, since no one else has looked at them.
Match 1:
Yeah, you need to get faster and more consistent on your tech. Probably obvious stuff you like missed platform dashes and the like.
You also seem to go for stomp a lot (0:47, 1:52, 2:25, etc). Stomp is really rewarding when it lands but it's definitely in the list of Ganon's moves that cannot be thrown out there. Granted, you did land it a lot against your opponent here, but be aware of the risks associated with and how slow it is, since Ganon is just hanging in the air starting with his 7-frame jump and 15 frames of start-up. Even if the start-up isn't punished, it can be blocked on reaction.
2:22 I honestly would've gone with a fair about here to pressure Falco near the ledge or even get him offstage (where he dies). Don't continue a tech-chase for more damage once you can take the stock.
Edge-guarding was also a bit spotty. Jab and ftilt (angled down, typically; bair can work if you're facing away already) are pretty quick moves that can hit Falco if he tries to illusion onstage or go for the edge (angle f-tilt down). I think he gets hit as long as he doesn't perfectly sweetspot the ledge and over time you'll figure out when this is possible. Upair is good for intercepting, but a lot of times you won't have time to set one up, so be aware of what you're faster options are.
Match 2
Nice tech-chase at the beginning, but again, I would've finished with fair rather than uair. Get the bird offstage!
A couple times this match you would do dthrow uair. Probably just an input error on your part, but work on not doing that.
Some other times Falco would get you in shield and you seemed to have a lot of trouble getting out (even after a full jump by Falco), recommend investing some time into learning wavedash out of shield to get you some space when he leaves gaps like that.
1:55, good example of when an f-tilt would've killed Falco. You got him almost immediately afterwards, but just look out for opportunities where you can use a simple move to kill him. I think you figured as much since you did use ftilt to kill him later on that stock, but don't be afraid to use it earlier.
2:26, why Falco took no action to avoid that missed stomp is beyond me, but keep in mind that stomp oos is VERY situational. You get punished in the whiffed lag. Other Falcos will utilt or shine you during the start-up. Use with caution. Towards the end, Falco was beginning to sort of catch on to your dair approach, once your opponent starts shielding due to Ganon's haymakers, start going for grab (dash grab, empty short hop grab, short-hop waveland grab, etc).
2:43 again, I'd go for the punch. Uair normally won't kill like it did here. Not to overstate this, but this matchup is only even/close to even as long as Ganon is getting Falco off-stage early and not letting him get back on unless it's on a respawn platform. Upair is good for edge-guarding and great for providing coverage around ganon, but when it comes time to knock spacies off-stage, few moves are better than The Punch.
Best of luck in improving!