The short answer
Reddit is strongest for learning language, objections, competitor pain, and early demand. Treat it as a place to contribute first and promote second.
Answer
How do I use Reddit for startup growth?
Use Reddit for startup growth by finding exact problem threads, reading the community rules, answering with useful context, and only mentioning your product when it directly helps the person asking.
How Wally helps
Wally helps find relevant conversations and draft replies, but users stay in control of approval and posting so the tone can stay human and respectful of the community.