stuck on finding niche keywords

the tools are weak for small niches because their volume numbers bottom out. I get more from the places the audience talks: forum threads, Reddit, product reviews, the questions customers email you. Note the exact wording people use. Also try the alphabet trick in Google search, your main term followed by a, b, c and so on, and read the autocomplete. A lot of the good ones show zero volume in tools and still bring steady visits.