It is very hard to rank for that keyword because it has a lot of competition. Especially if your website is new, if the domain you are using is recently created, it will be even more difficult. Your on page optimization is good, now just maintain good link building over time and at some point Google will start giving you priority.

Sometimes it can take time for Google to index new content. I typed "site:dailyblogprofits.com/pt-br" on Google and now I can see 63 results in Portuguese. So in the last 4 hours, since your comment so far, Google has indexed 6 more pages. I think you just have to wait and wait.