Vs falco. You're doing pretty good !
-Watch your spacing on replays : you want to pressure falco with your positioning, not retreating as far as you do and threaten him with DD to not let him laser too much.
-Work on your nair-shine approach, a lot of your approaches are a bit sketchy.
-Your use of drill is good, but you could take it further by doing drill-shine > techchase (grab, usmash, nair at high%), or drill-grab.
-You're good at catching his jumps, keep doing it, it's a huge thing vs spacies !
-On the other hand, don't jump as often/easily yourself, you could get punished so hard for these. Full-hop approaches (nair, drill, bair...) are fine, just don't spam them, and please, don't DJ and fall back down on him ! Apply this simple rule : if you ever DJ in neutral, it's to retreat to platforms.
-Also when you're pressured you jump OoS way too much. Roll away will get you out of trouble almost every time. Don't roll in, it's super easy to punish. Training Shine OoS would be a good idea, and against unsafe stuff, don't be afraid to shield-grab, or even usmash OoS to make a statement.
-Your WD OoS are good, keep going and they'll get super quick to punish more stuff and handle lasers better.
-Your techs and DI are okay, but some flubs got you killed by fsmash quite a few times. Beware the "No DI" on strong moves like falco fsmash, marth tipper etc. I'm sure your defense/survival will get better as you play.
Stuff you could do vs falco :
-More grabs. It's not easy to grab a falco, but you can destroy him with uthrow-usmash > more usmash/uair/regrab > till you can bair him offstage, and practice the chaingrab : it's easy, stupid broken.
-bair walls. Espescially when he's cornered, spam bairs on falco. Your better frame data gives you the edge in shuffl battles, So if he tries to jump out of your bair pressure you'll catch him and knock him offstage easily.
-shinespike him !