Not that I ever use it but there are apparently services like https://en.wikipedia.org/wiki/Product_Hunt people use to seek out new products.

But as sibling comment said, if it's really good, people will find it eventually.

Funny you mention Product Hunt because it's pay-to-play too, there was a whole controversy a decade ago exactly now: https://news.ycombinator.com/item?id=10739875