If you can explain how missed works is it depends on luck or some stats? Drop chances of numbers depends on luck yes/no if no then on what it depends. (When she find money it looks like ..wow money i love it.. . What sence from lettuce for snail?
Hitting the target depends on both Nono's ATTACK stat and the monster's DEFENSE stat. A dice roll is added to both and then compared. So it depends on both stats and luck, like in a TTRPG. Monster drops are fixed as far as money goes, but they can drop a specific item with a certain percentage chance. Lettuce for Uzu is used to level up; red lettuces increase its attack, and blue lettuces increase its speed. Every 5 lettuces, Uzu gains a level and at the first level she also starts fighting gaining the first attack.
Every weapon and shield has fixed damage and fixed damage scaling, it's the symbol with the sword/shield with an arrow. sword and shield alone indicate the bonus/malus to the hit/defense roll. It's everything in the ingame tutorial by Uzu (SHIFT button in her menù page). Every trap has same %. With Alt+Enter usually it goes fullscreen.