Struggle to build in public - I will not promote

Hey Reddit, I’m building an AI agent that transforms product B-rolls into ready-to-use social media content. My target audience includes agencies, brands, and marketers. My main goal is to create a genuinely useful product and get real user feedback to improve it. However, I’ve noticed that many subreddits have strict rules against self-promotion, which makes it challenging to share my work and connect with potential users. I don’t just want to make a quick buck—I want to learn, iterate, and build something valuable. For those of you who have launched products or built in public, how did you find ways to engage with communities without crossing the line into self-promotion? Would love to hear any thoughts or experiences! Thanks in advanced