Its very a much the type of game where you have to really practice alot just to enjoy it.
Smash, as a casual game or party game... Just doesn't work. Even if the developers insist that its a party game, I just can't see it as one.
Its just straight up not fun if you don't play it in a serious manner.
World of Light is absolutely soulless.
Playing with family / friends who don't really play just gets chaotic, because they either just spam B or suicide non-stop. Items just turns the game into a game of luck, because whoever picks one up, pretty much controls the stage for the rest of the game. 8-player smash is laughable.
Any characters with projectiles or bury moves can pretty much destroy casual players because they have no idea how to escape it.