Subscribe to the newsletter, Español de la Semana, for more tips on learning conversational Spanish: https://www.realfastspanish.com/newsl...
If you want to be fluent in Spanish then you need to know how to express the same in idea in multiple ways.
If you only know one response to "gracias" in Spanish (de nada), then you need to learn alternatives as a good habit that will help you build towards fluency.
There is nothing wrong with saying "de nada" in Spanish, unless it's the only response you know.