No emulator runs MK8D perfectly on Android yet. Expect lag on all but the most powerful phones.
But here’s the crucial truth you need to understand before diving in: So what are people actually doing? They are using a combination of modding, asset rips, and high-end emulators (like Yuzu or Skyline for Switch) or playing custom mods of older Mario Kart games within PPSSPP. mario kart 8 deluxe android download mod ppsspp install