There are not only forums but also platforms where you can publish your articles and receive rewards from readers.
Often you only earn a few cents unless you write high-quality works that many readers are interested in.
Therefore it is important to write in an at least correct and competent manner on topics of interest to those who frequent that website.
Sometimes the platforms accept articles on various topics (an example is Publish0x), but readers tend to be polarized on specific topics (on publish0x prevail crypto and Defi topics, even if it is possible to find articles about meals, traveling, and so on).