
Smash hax only works on new 3ds and requires Linux as far as I'm awareIs there a way to install smash bros hax with the demo on a Windows laptop I have a o3ds by the way

Didn't I already say that about 5mins before you lolNo. Smashbroshax requires Linux and can only be done on N3DS.
https://gbatemp.net/threads/tutorial-using-smashhax-with-linux.397194/