If you are looking for the extra tracks and characters added in previous waves (up to Wave 6), these are available for free with a Nintendo Switch Online + Expansion Pack membership or as a standalone purchase. Nintendo Support Update History Context Ver. 3.0.0 (Nov 2023):
Mario Kart 8 Deluxe – Finding Update v3.0.3 (or latest) safely + NSP management tips mario kart 8 deluxe nspchupdate 303rar link
: Nintendo encourages users to download games and updates from official sources like the Nintendo eShop. This ensures that you have access to legitimate content and helps support the developers. If you are looking for the extra tracks