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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.
I think they have updated the factors to measure the final number of DA and PA. Moz usually does it. In my experience, most of the websites that I manage have decreased their DA suddenly. Even some sites with high DA are now showing 1 point of Page Authority (PA) of new posts, some pages are like: 20DA & 1PA, so weird. But remember that these SEO metrics are not taken into account by Google.