Ok, I've got a ton of small specific tips;
I think you should work on incorporating shield drops into your platform movement / punish game
e.g - 1:09 you had a perfect oppurtunity to punish the Fsmash with a shield drop Uair and it couldve lead to perhaps a stock if you could get him offstage after the Uair
also at 6:12 you couldve punished the wiffed fair (you get the idea)
also at about 1:30 it was most likely a better option to bthrow fox offstage for a gimp rather than Uthrow (especially on FoD as the platforms can mess with chaingrabs unless its fd mode)
the edgeguard at 3:05 was great but you missed the sweet spot giving fox the ledge for free. youre edgeguarding other than that was pretty solid
I noticed a few times you missed some JC grabs during chaingrabs (0:36, 4:50)
this makes them a lot harder, practice the timing and it will be easier to chaingrab
imo you rolled too much, and i think wavedashing OoS was better in a some situations
e.g at 4:20 andrew waited for the roll and you got punished
ledge sweet spotting is essential Pika-tech, and you missed it in quite a few crucial times (7:44, 1:04, 3:05) it just needs practice
(2:42, 2:51) Bair is a bad approach option, id suggest leaving it for combo finishers if Nair is stale or something.
to sum up;
shield drops
focus on gimps
practice JC grabs
practice UpB sweet spot
try other things OoS (wavedashes, Up smashes)
less Bair
excuse the wall of text
Hope this Helps