Only watched this match
https://www.youtube.com/watch?v=_X3zhZPCwBs&list=PLXIrz7kYgXZqQcWDzt_8_wSB6brjg_asL&index=2
but I'll say everything I see
Right off the bat, at 0:02 - you miss the dair punish that you shouldn't have missed. Nair would have worked
For the next 10ish seconds you try to dair approach a lot. You get a good laser dair at 00:10 but you don't convert it to anything. Whenever you get a dair on fox, in theory, you'll always want it to lead to a shine, a grab, fsmash at higher percents, etc. Know your options.
00:13 bad ledge hop dair. It was easily punishable but the Fox messed up
00:15 you get the dair again but then dash away?
Next ten seconds are more laser dair approaches, try to mix it up. Laser grab, or just more lasers. I think you need to learn how to SHL more effectively in Falco's neutral game
00:32, you can react to Fox's missed tech with an utilt. That would have lead to a bair and an edgeguard situation
00:34 Fox whiffs the dair on your shield but you roll away. Not the best option unless you were trying to wavedash OoS -> fsmash or something like that. Otherwise, lost opportunity
00:37 That string where you get a dair > dash forward > shine > dair. That won't work all the time. It would be better to get the guaranteed dair fsmash. The fox could have teched and DI'd the shine away to survive
00:46 laser > soft bair approach. Not a good option at low percentages. You should have been punished more than a single Fox laser
00:56 That edgeguarding string. Well timed dsmash. That was a good angle from fox to avoid your dair but I think it would have hit if you stood over the edge more. You could have run off and did a retreating dair to cover all the options there
1:00 Laser > dtilt. That was a good choice in that situation because of spacing
1:08 and 1:13 dtilts but you weren't able to punish either one because you were too slow to react
1:16 Nice 3 hit combo there, fsmash again was guaranteed but that's up to you.
1:20 huge mistake. You really need to practice your laser game, neutral game and edgeguarding wise
1:45 laser > nair didn't lead to anything. Work on your punish game. Watch how PP or Mango convert off aerials and shines
1:50 good idea with the shine OoS. It would have worked if you shield DIed to the right a bit more but that won't always have to be the case.
Next 6-7 seconds, you roll too much. You need to stop rolling (not saying that rolling is bad because in some situations it is good), but you haven't been in a situation where rolling is a good option.
1:58 shine, up-b? Input error for double shining I'm guessing?
2:03 punish opportunity lost, react react react!
2:07, same thing. If fox does a FH dair on your shield, it's very easily punishable if he can't even shine after. But you spot dodge and roll away after. The roll wasn't terrible because it reset the situation and gave you more stage control. But the punish would have been better
2:14 you ran a little too far so you weren't able to punish the get up attack. In that situation, because he was close to the edge, you could have stood next to him on the right and just put up your shield. If he gets up or get up attacks, you can shield grab or shine OoS on reaction. If he rolls, you can drop your shield on reaction and punish it with an aerial OoS
2:17 happened again but it would have been harder
2:19 when the fox does a double jump, falling bair. You can just put up your shield and shine OoS that for a combo starter. Or even throw out an up tilt
2:26 after the dtilt. DAIR
2:29, good dash attack punish on the missed tech. Fsmash or dsmash would have finished him off. F-tilt was a safe option though, good.
2:31, I see you thought the fox was going to illusion up above the stage and the fox mindgamed you but missed the ledge. Wait for a bit longer on the ledge, you can react to that option or cover both a little better by dropping down a bit lower before you jump bair.
2:41 you get a dair but you don't fast fall and your momentum carries you too far forward. You can DI your aerial backwards when you get that hit confirm, leading to shines, etc etc..
2:54 you waited for the get up attack but landed with a soft bair. Dair would be a better option
Ok so just watching that first match, overall went decently against your opponent. Some major things you should work on:
SHLs - Like I said, your laser game is SUPER important as Falco. Learn to be more mobile with them and never full hop laser unless you're edgeguarding or trying to hit opponents on platforms or something
Punishes - You dropped a lot of punishes that game. At higher levels, Falco needs to convert off all his punishes on Fox. Otherwise, good Foxes will get in your face and capitalize HARD on your missed punishes.
Rolls - As of now, try to roll less and less. As you get better, you learn what situations you have to roll in, if any
Tech skill - I think you need to practice it a bit more. Against a lvl 1 bowser, handicap on, damage ratio set to 0.5, keep on doing pressure strings. Short hop aerials -> shine -> SH aerials -> shine. etc. That'll simulate hit stun so you practice your SHFFLed aerials that way. To practice shield stun, either go into vs mode and turn the invincible star on high and go to town OR go into training mode and spam the star item. Only downside to training mode is that there isn't c-stick. If you can download the 20xx hack pack, I strongly suggest it.
Something that is amazing, once you start hitting your shield pressure game, is learning how to shine grab. But work on your fundamental Falco skills first.
If you take one thing from this, Falco fundamentals are what makes him amazing. His neutral game and his punish game are god tier
Edit: I should also mention, shine OoS is super good. Shine bair OoS is super good at higher percents if your fingers are fast enough
Hope I helped