duplicate components maintain their properties

A Figma Noob here (Literally i started using Figma about a week or less(am also a noob on UI/UX design)) I´m creating an add to cart function. i have a Main component “Product card” and a main component “Add remove buttons” this component has a number to display the amount of items per click between to the + icon and the - icon. I´ve added a duplicate version of the add&remove component to the dupe product card
and change some of the properties of the elements in the cards (images, titles, prices) to match each individual item, so i have a burguer, nachos, tacos, you get the point, each with its price and whatever.The basic idea is that when a user clicks on a product card the items are added to the cart and the number of items per card is display on the screen., the thing is that i do not undertand why when i duplicate the components and click on the plus button, the number increses on every card, i´ve tried to detatch the instance and no success. i´ve followed some youtube tutorials but still i get the same problem. In the videos when you duplicate a main component the dupe works individually from the main component, so when you add interactions to the main and you click on the dupe component, the dupe component only will respond to that interaction, and not ALL of the dupes. Am i doing something wrong? am i an idiot? or what. If someone can help me i would be very gratefull. PS sorry if i mispelled something, english is my second language and i never studied formally.