“Step one — you look for a popular tool and search social platforms like Twitter and Reddit with keywords like 'X alternative', where X is basically the product with lots of users.”

Search 'X alternative' on Twitter and Reddit to surface ready-to-switch buyers

A repeatable discovery method is searching Twitter and Reddit for 'X alternative' against tools with large user bases. The threads expose unmet needs and a ready-made audience already shopping for a switch — pre-qualified for whatever lands in that gap.