So I'm just going to watch the vids in order and just comment on random things that stick out to me. Then maybe add a summary at the end of each. Oh yeah before I forget. You do a lot of good things, but there's only so much time in the world so I'm only going to mention things to look out for or work on. Here it goes...
Winners Round 1: C. Rabbit
vs Fly Taka
1:48: Nothing really wrong here, but I would've ended the utilts earlier. By the time you hit them 2-3 times they've most likely tried to guess a tech, meaning they can't tech anymore. Try letting them splat after a couple and jab reset into whatever. I like to take Falco's laser after this.
2:57: Nothing wrong either, I would've opted for a bthrow instead. I know people will say never to use bthrow and fthrow, but I disagree. Judging by how you got two pummels in before throwing him, I doubt he would've broken out too. On to my point though. If you would've bthrown two things would've happened: 1) He DIs high and lands on the platform he landed on anyway, which is a free tech chase from below just like your uthrow. 2) He DIs low and lands near the edge. Either tech chase him to the ledge and dtilt or get the tech in and punish there. The main problem I see with uthrow is he could've avoided any follow up by simply DIing away. He wasn't aware and made a terrible decision DIing towards you. If he doesn't break out of throws bthrow would have given you more guaranteed follow up options.
5:10: Easy there slugger. I think you would've been dead if the Falco didn't mess up. He did a dsmash on the platform, but we all know he meant to fall through dair. You're head was popping up a little ways too. Not too much to say besides remembering to be careful.
6:17: I'm kinda surprised he teched your ledge hop fair considering you hit him with the landing hit of fair too. Not sure why you went for a grab though. Is this something that works on bad DI, or was that mistake like grabbing too early? My instinct would have been to wait to see if he missed the tech and prep myself for a jab reset. If he techs then try to punish from there.
6:30: You dthrow him on the platform. This is something that Kirby should milk if he can. I personally like to do dthrow "chaingrabs" on platforms until I think they will DI off. For some reason you shield even though you have the advantage in the situation. My advice to try would be to pivot grab him and "drag" him back to the center of the platform with another dthrow. Or you can cheat like me and do a dash dance stopped into shield grab. It's slower but is still pretty quick if done right. Either way, moral of the story is you had a free punish, but it looks like you were unsure/scared.
End of the day. It just looked like you were better than this Falco.
Winners Round 2: C. Rabbit
vs Nhat
2:02: The dilemma: I can't tell you that you were wrong to dthrow, but you can be punished for that. Even I do it if I think the opponent doesn't know the matchup. But I feel it's my job to make sure you know that's not safe. Marth can UpB or fair (really tight timing for fair) you for dthrowing him. He doesn't have to tech ever. He can jump out if he feels like it too.
2:40: You are edgeguarding and you back off while you are able to CC most of his aerials. I would have stayed put. Usually you can CC whatever he throws at you and dtilt him into an edgeguard again. I kinda forget if you can dtilt inbetween the two hits of nair. I feel like you can but I know you could CC into shield for sure and not take the second hit, which is normally a free grab punish at least. Obviously it's different when you're at higher %, but if you don't have much damage I would take the damage for a possible kill any day.
5:55: After you hammer you do a couple utilts. You get shield grabbed after the 2nd. I would have crouched after the 1st. I am willing to bet he would have tried to grab and whiffed. He was already sheilding, his instinct was probably flooded with "sheild grab!" If my scenario worked, it would have been a free utilt to uair.
8:41: Nothing too big here. You knock him down with a getup attack. You were probably a little too hasty. You ended up getting hit with his getup attack in return. I would have ran and tried to duck the getup attack and punish afterwards. I've had mixed results on crouching Marth's getup attack, but next to the ledge like that I think it would have been worth it.
Winners Semis: C. Rabbit
vs Bon Bon
0:20: You dthrow and try to tech chase Sheik. This doesn't work. Sheik should always be able to ftilt you before you can grab her again. The only way I could see you reaching her is if she DIed the dthrow to the right then teched to the left or vice versa. I guess if she was the by ledge it would work too lol. On Sheik I tend run to where she teched and do a dtilt at maximum distance.
0:41: Haha, tech chase hammer and hope they spot dodge or mess up is pretty fun to go for, not going to lie.
1:18: Not sure why you did a getup attack from the ledge. Maybe accident? It looked like you still kinda had time for that uair. I would've done a normal jump from the ledge. Most Sheiks aren't good enough and/or brave enough to sweetspot the ledge when someone is on it.
1:36: Not sure how he got 3 grabs on you. I usually only remember getting grabbed like 2 times at most. I probably DI in/up and hope they don't punish me hard for it.
1:52: Hard to call out during a match, but if you would've just ran up and shielded, you could've baired out of shield and taken his stock after he faired.
3:01: You try to like buffer or option select or whatever for a jab reset after you dthrow. imo this is something you should be able to react to instead of trying to cover multiple options. If they miss the tech, you react with a jab. If they tech, you react to which direction they go.
3:18: You do a bthrow here. Judging by the DI and % I think you could have comboed into an uair. It can be pretty tight timing sometimes, but that looks like it would've connected.
4:52: Kinda hard to react to the combo right here, but I would've tried a fair/bair/nair whatever after the couple utilts. Definitely too high for grab.
5:35: Probably should have grabbed the ledge sooner. You grabbed it really late, which seemed like it made you late for the UpB punish.
6:25: Relates back to 3:01. Plenty of time to react to and jab reset that missed tech. Good recovery/good reading the roll afterwards as a followup.
19:04: Not sure what you were afraid of. That was an easy grab of the ledge kill.
In general I think you should be grabbing the ledge faster for ledgeguards in the this matchup. Just jump and regrab if you want to refresh invincibility. I feel like you let her get away with too many recoveries in general. Otherwise good play. I treat this matchup similar to Marth. A lot of crouches for sure.
That's all I'm going to do for now. That took forever as is. I'll finish the other two another time. As expected, the commentators sound like they know nothing about Kirby XD
