Who do you main? Used to be Marth and Ness, but I'm slowly phasing out Marth in favor of Samus(former secondary). I have a solid roster of about 8 characters, though.
Do you think you're any good? If you put me up against a top tier competitive player, I'm probably crushed in moments. Put me up against your average competitive player, and I will usually at least give them a fight. But I'm better than most casuals.
What controller do you use? Dual Joycon, mostly so no one else can complain about not using the pro controller. I'd probably use Gamecube if I had one.