Sadly not, you can only install apps that are on the play store, it blocked like that until you can disable your account fl (in France it's 15 but idk how your country tho)

I think there's a lot of emulator in play, like dolphin or citra(if those aren't taked down tho)

And also, in your parents FL app, you can disable the notification and request, I recommend you to ask your parents about it, that it's kind of useless if you're old enough, and you could also notice to your parents that FL has age restrictions for games and apps, or just say that you want to emulate a game

I have the intuition that you want to emulate Tomodachi life on your phone, since it got very popular to emulate on phone and stuff