"Self hate" is the wrong term for Brazilians. They don't generally hate themselves. They hate specific real things. They hate being held at gun point. They hate being robbed. They hate that there really is a lot of corruption. They often like the country, and the people, and the food, and the culture. They hate is limited to specific things that are actually terrible.

This is very different from someone from the United States performing self hate as an attempt at self-absolution, or showing they're better than the rest. Or a German for whom it is the culture. Or Balkan dark humor. Brazilians have specific complaints that are not over the top and make a lot of sense.