You don't have to stick with the basic options.
How Smash Bros. Pros Remap Their Controller Layouts - IGN
World of Light Difficulty Setting Differences and How to Change
Basics-Controls - Super Smash Bros. Ultimate Walkthrough - Neoseeker
Controls - Super Smash Bros. Ultimate Guide - IGN
What can you do with amiibo in Super Smash Bros. Ultimate?
Smash Bros
Super Smash Bros Ultimate Controls - Smash Attacks, How to Use Final Smash
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Smash Ultimate Controls, Moves, and Combos
If you use a single Joy-Con in Super Smash Bros. Ultimate, are you just going to be missing a bunch of moves, or is there any way to make it work by
Controls - Super Smash Bros. Ultimate Guide - IGN
How to Unlock Every Character in Smash Bros. Ultimate
New Controls Options: You can set control stick sensitivity. i.e. How hard you have to flick the stick to Smash/Dash. : r/smashbros
Controls, Smashpedia