If you have a hacked Switch for homebrew or emulation, do not download pre-packaged NSPs from random forums. Instead:
Most sites offering "free Switch NSPs" are filled with: attack on titan 2 switch nsp final battle dl install free
Downloading NSP files (Nintendo Submission Package) from unofficial sites violates copyright law. You are stealing from Koei Tecmo, Omega Force, and Nintendo. If you have a hacked Switch for homebrew