According to what I understand, each article should have a single focus keyword that is unique to it, nevertheless, since Rank Math allows for the entry of several focus phrases, which approach is the best?
Focus on one primary keyword per article to keep your content clear and compelling. Rank Math’s extra slots are handy for related terms or long-tail variations, but don’t get carried away.
Think quality over quantity. A well-optimized article with one strong keyword will usually outperform a keyword-stuffed mess.