Probably a skill issue on my part, but to me Ness is one of those characters where you can't tell if the player you're going against is good or if they're just slapping their dick against the controller. How do you go against this? It feels like everything they want to do they can just do without consequence.
I think my main issue is failing to adequately punish Ness and avoid the PK Fire. I know it can be shielded rather easily if you're looking out for it, but I find myself failing to do enough damage to feel like I'm able to stay a distance away and bait out a bad option and punish accordingly, so I keep rushing in and falling for the dashback PK Fire.
Also, Ness down smash/up smash at ledge decreases my lifespan. I don't know why this is a thing