So for the falco vid... Let's see what I can do.
Helicoptering dair is not useful against a falco that knows what he's doing. He can easily wait for it to end and then punish with bair, cuz of how fast he moves vertically. It's better to use it after you see he's jumped up after you. I personally like to fastfall to about falco's double jump height, see if I can bait a reaction and then jump out of the way if he does jump up, while dairing to cover me.
Maybe you just weren't having a good day, but you were fullhoppin bair's oos, you would gotten a few more hits if they were just sh bairs oos.
Something that's always important, try to never lose all your jumps offstage. Your first death could have been avoided if you didn't use up all your jumps getting back. In that scenario, I probs would have used upb earlier taken extra damage, but at least I woulda either landed on stage and gotten all my jumps back (if he waited on the ground/daired) or had a better angle of approach (if he bairs and I di properly).
So, spotdodges suck against falco, well at least if you're within ftilt range of him. If you spotdodge at that dist, he can cancel his laser into gatling combo, dash attack, maybe usmash among other things and hit you, which he did do on occasion. If you think your shield is too low, hang back and spotdodge his lasers, but never spotdodge that close to him. Better to powershield and punish.
I've heard shad is a nice way to get through lasers but everytime you jumped up to get through the lasers, well, you'd get lasered. I personally just stick to the ground when trying to approach the falco, you were powershielding pretty well, just stick with that. (it's always sad when I see people go from a powershield to a spotdodge (there are usually better options) and get punished, which I believe happened once or twice)
umm, I don't particularly recall much else, little things to note, avoid rolling on platforms, avoid random utilts that hope falco falls into them. Also, if you can stay grounded in this match after chaingrab percents you can live to massive percentages, use shield more than anything else at that point, cuz falco's not gonna kill you with a grab till well past 250, and if you're smart with di you can get back to the stage relatively well. That isn't to say to just sit in your shield, but if you think you're in a bad position at killin percents, shield is better than a spotdodge.
I hope that was useful.