Dude, first make a BRL deposit into Binance, it can be done via Pix, but yes, you choose the amount, then you go to the markets tab and choose USDT/BRL and transform it...

Can someone explain to me why before I was able to buy cryptocurrencies with no minimum value and now it always requires a value? Like, can't you buy at low prices? do you use any other wallet that indicates why binance is like this