falco can be pretty hard here's some tips
don't get CC shined
don't fall for the same laser grab setups
learn to recover in a way that minimizes your chances of getting dair'd or dsmashed at low percents cuz you can't tech them until like 40 or w/e
kill him every time he's forced to up+b below the stage (this means knowing how to cover tricky angles when you don't have time to shine)
maximize your damage off grabs
NEVER try to grab unless it's 100% guaranteed (either ur confident in your reactions in a tech chase or you got a sick read)
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at mid-range distance, use your dash dance to make him scared to laser, and then stuff him with nair when he does unsafe lasers
be hella good at maneuvering with your shield, use your shield as little but as effectively as possible, and learn how to wavedash oos after lasers as fast as possible. powershielding is good but the important part about it is that you shielded and WD'd out hella fast, not that you reflected a laser
use platforms to make falco chase you and put himself in a bad position, but don't CAMP platforms predictably to where he can easily bair you out of your jumps
be good at shine oos. this means knowing when to punish him when he messes up his spacing and ALSO knowing when to give him credit in his spacing and NOT try to shine oos (don't be cocky)
know when it's time to do a kooky uair. uair is a high risk high reward move that can easily turn the match in your favor if you can finesse your way into hitting one (if ur clever you'll find it hits more than you think)
don't get flustered cuz falco can kill you really easy off the edge for making mistakes (see: me vs. shiz from last year or w/e LOL)
don't get discouraged cuz falco can do like 60% cuz you didn't time your grab right or he CC'd your nair
play an adaptable style that knows when to bait his approaches with bairs/grabs, when to rush him down with nairs and when to use platforms to bait his jumps.
good luuuuck