Google ads are a con. Meta ads are a con. If someone tells you you’re just not doing it right yet, they’re probably trying to sell you something.
Add Reddit Ads to that, all the alleged clicks not one comment or conversion. I get my app is probably bad but you'd expect at least one comment out of 100 "clicks" to say something.
Unless you somehow insult their favourite entertainment franchise / political party / deity / etc., or praise one of the same that they don't like. That will get you piles of responses, though not in a way useful to your app!