Finding sub-niches became clearer when I started looking at long search phrases instead of short keywords. A sub-niche is just a smaller part of a big niche, and it usually shows up in longer keywords that focus on a specific problem, product type, or group of people. When many long keywords are talking about the same small topic, that can be a good sub-niche to build content around. It feels easier to rank and easier to target the right readers. How do others normally spot a good sub-niche early?