already wrote this stuff up, so if some stuff is reapeated.... don't hurt me!
i have a decent amount of exp vs falco, so i'll throw in what i know.
lasers are very annoying as we all know, but you are very capable of air dodging through them to start covering some ground. When you get next to him you have to be very careful not to get caught by even one laser or you will get grabbed, i've found that getting behind him where he's gunna land and waiting with a bite works well. If stay in front and shield, wait for the first two jabs after he lands, and shield grab inbetween jab 2 and 3 of the combo.
Falco doesn't move very quickly through the air at all, so i've found that any time he tries to approach with a move from below or above, its very easy to move right around and counterattack.
for edgeguarding, the best i've come up with as right when they can phantasm to either the ledge or the stage, i run off the level and then see what they do. If they go low, i try to snap to the ledge for the hog (rare, they will usually not risk this). If they go for the stage i immediately dj and air dodge back on to the level, trying to land where they are gunna land and either fsmash or grab to fthrow them back out. Of course, if they cancel their phantasm right, this messes your whole plan up ha ha.
Uptilt is ANNOYING. It seems to outprioritize all of your aerial approaches, so make sure you watch out for this move. Airdodging through it does work, but they can bait that if you aren't careful.
Grabs suck, as we all know. They can grab to like low 40's before they have to dair you, and if your offstage im pretty sure you have to jump before you bike otherwise the bike is too slow and you die. If you jump and bike away from the stage, i don't think they can reach you if you airdodge at the right time etc. Grabs should never kill you, just rack up a lot of damage.
Im sure im forgetting stuff, but thats what i've found as of now.