@ BO - in the first match vs Marth
Bo after your first nair you should have been able to grab or shine wavedash grab
When Marth forward threw you off the ledge you jumped too high, you need to sweetspot with your double jump vs Marth, he was one jab away from forcing a firefox out of you, after that he could drop off and up b you into the wall, counter your firefox and fair gimp you, or forward smash you.
At 30 seconds you jump off the ledge, I don't know if it was an accident, but if it was on purpose you should learn to waveland onto the ledge, and on yoshi's Fox can ledgedrop jump and waveland onto the side platforms then you can fall and bair him.
Try using more dash attacks on Marth, above 50% he has a really tough/impossible time crouch canceling them into anything dangerous and it can set you up for nairs to get him off the edge.
at 1:12 you get up attack, just don't use that, its pretty worthless, jump and forward b or again wavelanding is a great option here, even getting up and shielding, or getting up then rolling is fine.
VERY NICE on the short forward b, that was a perfect use of it!
Try not to challenge Marth from above too often, mix up your timing so you can fast fall a drill in between his tilts, with time you will learn when he can't be drilled and know when to back off and approach another way.
@ 1:28 - Should aim to sweetspot the forward b, you weren't punished this time thankfully.
@ 1:30 - I would just short hop bair again then react to what he does, a lot of people would roll right then so you could chase for a grab, or you could have shield poked, but you NEVER want to be above Marth when he is under those platforms.
Shortly after I see you pressing jump off the ledge again, stop that ^_^
Good work maintaining control after that. At 2:16 I'm gonna guess one of two things, either you just had it dead set you wanted to go at that angle(which happens to the best of us) OR you weren't looking at your opponent, I would have tried to ride the wall a tiny bit, you could probably have been faired still, but it would have been more difficult for him, and you would have had the platform to your left to try and tech on as you went past it.
Again, good work shining out of the grab!
I'm sure you know but make sure and wavedash out of your shines.
And a missed tech at the end cost you your life, obviously work on teching.
Overall your not bad, but you have room to improve, fortunately for you, you seem to have a fairly good understanding of the basics, and you you seem to play fairly intelligently considering how limited you are technically, all I can really say is to work on your repeated small mistake, and your off the edge game, remember you have invincibility so once you grab the ledge be ready to make that third of a second count, on the flip side of that coin be sure to pause every once and a while too to avoid becoming predictable again. Work on moving around on platforms and surprise attacks. Watch some PC Chris vids on Yoshis to see what I mean. Fox can be punished so hard because of his weight that it makes it all the more important NOT to be hit, fortunately he is small, fast and has good gtfo me moves.