Am I the only person who thinks that Side B camping is mad punishable? Especially with our upair and up b we can easily see that and not have to do much to stop it. Now, his canceled->lazer->attack/grab is very tricky, hard to predict stuff, especially with our limited OOS options. Becuase of our low weight and our bad OOS options against the lasers and his pressure game, the matchup is rather bad, I'd rather go D3 than ZSS against Falco, and Mew2King calls that unwinnable.
The OOS upair is your best option as it gets you out of the poteintial grab, but it gets predictable. Downb is also there but again is predictable as well. You really need to learn what OOS options are usable against Falco and how to use them unpredictably. That's how I see it. Falco abuses both of your weaknesses in the matchup, her low weight and her lack of viable attacks out of shield.