Um guia para quem estuda Inglês Online
Maybe Brazil's main problem is not corruption in and of itself, but the people. The human being is evil by nature. The meaning of corruption has changed since the dawn of time, and so far, human beings have not come to an agreement on that.
For this reason, we still have a long way to go. And this way isn't expected to be a smooth one. Quite the contrary, it is likely to be a very bumpy one (or "it will likely be a very bumpy one"). However, if we all keep / stick together, there's a (good) chance we can make it ("perhaps" is not wrong, but can be replaced by a smoother, less jarring transition phrase).