If you have Nintendo Switch Online, you can use a "Game Voucher" to get the digital version at a discount.
While NSP and XCI files might be found online, it's crucial to consider the legal implications of downloading games through unofficial channels. Purchasing games through official channels supports developers and ensures you receive updates and support.
: This is an unofficial format that emerged as a way to distribute Switch games. XCI files are essentially dumps of game cartridges or eShop downloads, converted into a format that can be used on the Switch console.