@iamthemicrowave.
Couple things:
-WD oos when you get fsmashed.
-When marth is above you it is an amazing thing. He was above you several times and you just let him land. Bair him off the stage.
-You should grab more as an approach (when he lags of course).
-When you uthrow uair, work on the timing of your jump so that it is at the earliest possible time after the throw finishes. You would uthrow -> wait -> jump and uair.
-When he's right above you and you jump up (the times you did hit him), you used nair. Bair has more knockback and good people use it instead of nair.
Match 2
-Grab. When you grab, always think how to get him off the stage.
-You pretty much ran away the entire match even when you were behind. But he stupidly approached like falcos do so it worked out for you.
-lol you tried to laser a falco.
-you should work on your tech chasing more. You react to his rolls late, and if he just sits on the ground before rolling, jab reset him.
3 (why would he go marth when he just beat you with falco, when you're going to marth's worse stage? Lucky you. Oh I guess it worked out. He probably doesn't like small stages sso next time you play him to FoD or yoshis if you don't have a favorite counter pick.)
-If he side b's -- CC grab!
-He would run at you and you would full hop and try to bait him. Don't get nervous when he runs at you.
-Use platforms. Camp, run away, laser, get him really pissed, and then punish his attempts at approaching
-Marth does not have many safe approaches (sh late fair is safe but not much besides that). Things he did like sh nair are punishable with a nair or a grab.
-If he tries to do the stupid run in dtilt, CC it.
You're pretty good and you look like you know the match up in general (the marth-fox at least; idk about the falco one). Definitely try and use platforms to your advantage, it kind of seemed like every match was being played on FD by both of you guys.