Nintendo is notoriously protective of its Intellectual Property (IP). The company has a long history of taking legal action against ROM-hosting sites and creators of circumvention tools. For a user, downloading an NSP isn't just a violation of the Nintendo Terms of Service
Searching for free Miitopia NSP downloads often leads to unofficial or pirated content Miitopia Switch NSP Download gratis
Unfortunately, it's not possible to download Miitopia on the Nintendo Switch for free. The game is a commercial product, and you'll need to purchase it from the Nintendo eShop or a retail store. Miitopia Switch NSP Download gratis