Hide out-of-stock products from the loop using attribute filter

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Hello, I wanted a little help in this, I researched a lot, I tested several codes, but without success.

is the following, when I use the G filter in my products, the intention is to show ONLY products that have stock in the G, but they even show products that do not stock in the G, I researched I saw that this consultation, she kind of researches the products with the G attributes and not the stock, so how would I do it manually to avoid more customer problems not finding products they want?