More info requested, more info provided.
So one of the things that i have the most trouble with is her neutral b. He (my buddy) uses zeldas nB a lot and rather quite effectively. The hit box on it is large and persistant. what he usually does is throw a dins fire out about halfway between him and me, and then when i come in (usually first with a lazer to detonate the dins fire, or just up and over the ball) he will either dash attack me, get under where im going to land and up smash, or space me out and then nB when i land near him.
One thing that i can land pretty successfully on him is my side B, Zss's tether lazer thing. This throws him up, and i usually get under and him and up smash, and then try to start combo'ing from there.
I think most of my problem with him, especially yesterday, is that 1. i was being too predictable, 2. my gameplay was adapted to another one of my friends who plays way more of a tech game and 3. i wasnt even using all of my combo openers on him. One of the things i like to do with him is do ZSS's dair juggle > combo. Im actually pretty good with the dair juggle and can routinely juggle him up to the ceiling > drop under him > upair for a vertical kill (assuming his DI is really off).
My zelda buddy has pretty much zero tech skill, his game is actually REALLY campy. Not sure if im using that term correctly, but if he plays any character that has a ranged attack (mario's fireballs, any character with a bow, pikachu's electric bolt thing that goes accross the ground like a slinky, etc) you will see him spam those attacks to a comical degree. Like he will sit under a platform as mario, spam fireballs (he has no shame, he will sit there and spam them for the entire game) and then if i attack from above, he will just upsmash, i'll DI away from him killing his combo game, and then he will run to the other side of the stage and do the exact same thing again.