Work on your punishing, there are times when you ftilted, when a Jab would've sufficed(specifically for a reset) Also, you dtilted, when an up[smash may have killed due to PS's low ceiling. At low damages, when you recover, you should try to make it more confusing for your opponent, like shine stall to jumping to grab the edge or something, rather than up/side B all the time. Work on how to react when you get pressured. You should sheild more(or at least under pressure), you got hit by a lot of things that shouldn't have hit, also, if someone messes up on pressurign the sheild, you have Usmash/shine out of sheild.
Do NOT dashdance/ dashdance>wavedash right in front of a Marth, at leastnot when his sheild isn't up. Then he can only grab, upsmash(poor) up-b, or wavedash OoS(which is extremely noticable in the first place) It's obvious the most common thing that will be used it grab OoS, followed by Up-b, since the other two are bad options. So space your DDs properly, and you should be able to grab> aerial him. A lot of the times, you were DDing, when you should've been attacking. Also, do NOT shine unless you're certain you can hit Marth, that's begging for a free Fsmash/grab. once Marth is on the edge you want to stay away from him, if you're trying to shine spike before hand, it's safer, you obviously see the best time is after he uses side b. Other than that, you should wait for him to get back on. Unless it's not a "sweet spotted" Up B, then you can Bair him.
Against Peach you need to space more, don't be afraid to laser, I noticed you didn't do that much. You have to be very wary of when you go inbecause of her godmode Dsmash obviously. But the main thing you need to worry abotu is getting your laser game up. Also try grabbing more since Peach is to slow to really do anything against Uthrow.
You need to shine comebo more against Sheik, along with better spacing, and SDI. I don't really know much of what to do against Sheik, other than you want to FF less, and retreat most of your aerials.
