from the first set i saw a few things..
1)When you know that upair isnt going to kill fox and you cant combo off of it just nair him
2) the turnip at 40 seconds of set 1 is super good but you can easily get the kill if you just float towards him and A) nair instant side b or B) fair him out of up B..dont be afraid to go out and hit him
3) you dont always have to air dodge out of up throw up air but good job doing that consistently! really good foxes will be able to hunt you down afterwards or will just start baiting it out
4) at 3:51 i would either hold your last turnip and bair him then drop down throw the turnip or pull another one after the bair
5) you got shine spiked a lot by the fox if you think hes gonna keep going for it you can just hold float a bit longer and come at him with a nair or uair as you approach ledge
6) when youre establishing float against fox (on fd example: 9:43) you want to be a tiny bit higher than that second float because they can still short hop fair you out of that height
General stuff to work on:
Go back and watch exactly how armada edgeguards fox. you need to be as consistent as possible at edgeguarding in this MU if you want to win
Also i noticed this throughout both sets but theres a little work to do at moving as soon as possible out of the endlag of your moves
Good stuff:
I thought your spacing in neutral was fairly good for the most part
nice mixups when you did get the fox into shield