After downloading, you will get a .NSP or .XCI file. A genuine NSP file is usually between 2GB and 15GB. If a file is 200KB, it is a virus or a fake link.
Switch game cartridges are durable. You can buy a used copy of a AAA game for $30, beat it in two weeks, and resell it on eBay for $25. Your net cost: $5. You essentially rent the game legally. Sites like (Latin America) and eBay are your friends. descargar juegos nintendo switch nsp rom