If you want a native, optimized mobile experience without the headache of emulation or the risks of sketchy APKs, the Pokémon franchise offers excellent official alternatives on the Google Play Store:
: You must legally own the game and dump your own system keys and game files (ROMs) from your console to use these emulators. Ultimate Pop Culture Wiki Official Alternatives for Android Pokken Tournament Apk Download For Android
: Install a reputable Switch emulator for Android from a trusted source or official GitHub repository. If you want a native, optimized mobile experience
How to Play Pokkén Tournament on Android (Emulation Method) If you want a native