I would suggest working on your mobility a little bit. A lot of your movement looked sluggish to me.
0:04 - Not sure if this was an error in trying to input another special here, but a missile was both a bad punish and a punish that shouldn't have worked. With a turnip in her hand, Peach can't dsmash, so you could have CC dtilt/dsmashed if you wanted.
0:12 - Work on your ledge get-up options, especially your invincible ones. When Peach is floating right above the ledge, there isn't much reason to go for a regular ledge get-up. An invincible ledgedash is faster, and a hax-dash can fake her out. Also, if you wait for her to come down near the ledge, you can always ledgehop fair her into upB or an appropriate mix-up.
0:20 - Don't DA in neutral, especially with this much space between you and your opponent. It's easy to avoid, and it's pretty laggy so it's easy to punish.
0:24 - I'm not sure, but it looked like you tried to shoot another standing missile right under Peach. In any case, you shouldn't have stood there. When Peach is coming in directly overhead, you need to be mobile. Alternatively you can upB her, but just standing there is not a good idea.
0:28 - Not a good distance to ftilt from. Ftilt is extremely unsafe from this range. The Peach preemptively shielded because she didn't want to get dtilt/smashed. Knowing this, you have quite a few options you can go for. The safe option, if you want to hit Peach, is to jab pressure her, especially since her back was facing you. Alternatively, you could WD through her to gain control of center stage, grab her, or bomb pressure her, but ftilting her was really bad right here.
0:30 - Gotta sweetspot that DJ back to the ledge.
0:35 - Again, you have much better options than the regular ledge get-up actions, especially when Peach is too close to the ledge.
0:48 - Like, why did you not only stand there, but also keep shielding, while Peach charged a smash way below you? Completely safe from whatever she was doing, you could have easily tried to punish or at least maneuvered to a better position.
0:52 - Why missile there? Peach is above you. You need to be more mobile.
0:56 - The Peach is reading you because you tend to early DJ back to stage and try to nair your way back down. This just loses to a large host of anti-air moves, including Peach's usmash. You've gotta mix up your recovery.
1:06 - Nice grab!
1:08 - This is part of what I meant when I said your movement looked sluggish to me. After nairing, you should FF to get down to the plat as quickly as possible so you can either follow up your attack or avoid a counterattack from the opponent. However, you kind of just drifted through the air without FFing and it left you in a bad spot, even after you'd just connected with the nair.
1:12 - Really weird that you DA'd here. Peach had already hit the top of her FH in the middle of the stage and you looked at it...and then DA'd. Not only was she really far away, but the DA was incredibly late as well.
1:14 - You can't just spam whiffed ftilts in this MU (or any MU, really), especially when you're at high %'s. You have to be more mobile.
1:19 - So you DO know how to ledgehop fair...
1:20 - ...but why are you choosing to combo into upB here? You're down and Peach is at high %'s. Seems like a perfect time to go for the kill with something else. That upB was a punish that would always work but should have given you no reward. The only reason she ended up like she did was overzealous SDI.
1:30 - Can't just sit there trying to CC at 110%. Gotta be more mobile.
1:43 - He read you completely. You always DJ early out of hitstun.
1:51 - Why are you holding shield at this distance?
1:55 - Literally FIVE things were wrong with this scenario:
- You burned your DJ out of hitstun immediately.
- You tried to fall from the sky with a nair...an early nair that would take years to reach the ground. Both this and the early DJ had already been hard-read by your opponent before.
- You didn't drift in and grab the ledge.
- You didn't sweetspot the ledge with upB.
- Your DI for the fair was horrendous. You shouldn't have died below 90 from a fair.
2:14 - Don't jump into a Peach standing right above you on a platform.
2:17 - You've been rolling a lot, even though Samus has the worst roll in the game by a very large margin. At first I thought it was a technical error, but you've done it a lot and you never WD OoS. Learn how to WD OoS.
2:18 - At first glance, it looks like your bad roll got punished directly. However, upon closer inspection, one can see that you crouched right before you got hit, even though you're at decently high %s on your last stock. If you crouched, that means you had enough time to move away or shield. You really have to rely a lot less on your CCs and a bit more on your mobility and OoS game.
Hopefully, I didn't seem too harsh. If Samus is going to be viable in Melee, she needs to utilize her superb ground mobility and OoS game along with her CC abilty. You seem to have the CC part down pat (you landed a good deal of your CC dtilts), but you really need to work on the other things.