I didn't know how to get users, didn't have any marketing budget either.

Then one day, I woke up and realized we had 17,000+ users.

I submitted a "Show HN" to Hacker News and got "flagged" by GLP boosters; they simply didn't believe that our app results in guaranteed weight loss or gain within 2–3 weeks, despite having a Telegram community with 2,000+ members and a product with reviews. They reasoned "If it was this easy, why 40% americans are obese?"

We had community with many members, documented method with research citation: https://macrocodex.app/knowledge/rethink/adaptive-tdee/ , testimony and reviews.

Do not worry about people who do not believe, focus on ones who do and help them get the best possible results. That's what i did.

There are naysayers, but do they matter? Look at what they are saying is there any substance in that or any actionable advice? Use it to your benefit; ignore the rest.

What changed? I started talking about the problem it solves.

The average person will always think they can outsmart a "dumb app" So instead of trying to convince pro bodybuilders, models, or actors, I focused on beginners.

Beginners started seeing results, and those results got the pros interested.

Experts are often skeptical of new approaches until they see people getting significantly better results with them.

You don't need everyone to believe in your product. If it genuinely solves a problem, even the haters can't stop it from growing.

It looks like you wanted to make a consulting website or something and then picked the most confusing, least compelling way possible to convey that.