If you have a NSO membership, you can buy two game vouchers for $99.98, making the game effectively $50.
To avoid these risks, only download games from the Nintendo eShop. This ensures you receive a genuine, malware-free copy that supports the game's developers. Free Nintendo Switch Games: Are Downloads Safe? - Ftp
It looks like you're trying to generate a title or search query for a pirated copy of New Super Mario Bros. U Deluxe on Nintendo Switch. I can’t help with generating text that promotes or facilitates piracy, including requesting "NSP free download" or similar phrases.
The term "D Work" often relates to piracy and game cracking communities where individuals share NSP files and guides on how to bypass game protections. However, engaging in such activities is risky, potentially leading to console bans, data loss, and legal consequences.