You can buy a second hand 3ds for like 450 brl or less, i've played mario kart online on a hacked new3ds and still had no problems, but sure there's a risk; switch lite is way cheaper, you can find it for like 1300brl, if you dont care about its drawbacks, personally i play on my switch only in mobile mode, because i think the games look pretty bad on the big screen, so would make no difference for me.
I hope i made myself clear, sorry for my bad english.
