Alright Junk, here's what I see, usually noobs and even good/pro MKs don't Tornado all that well. When MKs do retreating Nados, run after them as they're still Nadoing, you'll be surprised at how many MKs still continue retreating thinking they'll get away. So run after them and be PS ready and you can punish that. Even if it's just a few steps so you can Ftilt them, don't be afraid to approach a retreating Tornado.
0:21 - You coulda Utilted his land on the platform
0:30 - Do a rising Dair if he's gonna come at you from below with Nado
0:35 - MKs usually try to land behind their opponent 9/10 when ending Nado, so a turn around grab would have been good if you hadn't gotten hit by the last part of Nado
1:07 - I liked that, that's basically what I'm saying you need to do majority of the time
1:13 - You just stood there lol, throw a Waddle
1:18 - I know it was hard to predict him ending the Nado early, but you could have pivot grabbed him
1:23 - I think people are saying Utilt clanked with Nado here? If so, that's wrong, he just stopped the Nado short. Utilt outright beats Nado.
1:40 - Could have grabbed or tilted
2:15 - Should have thrown a Waddle
2:21 - Again he landed behind you
2:40-50 - You had a good little run against Nado, that's the main style you need to adopt when fighting it
2:53-58 - He did a couple of retreating Nados which I mentioned you should try chasing, or run away and throw Waddles
3:16 - Noticed he tried to land behind you again with Nado?
3:42 - That was a **** up on his part which made you misread
3:45 - Waddle
6:24 - Idk what that was, he was either dead or barely getting back on stage, you really could have punished that below stage Nado hard instead of getting hit by it
That's pretty much all I've got. I only touched on Nado and the punishable ones. Hope it helps