I started submitting my blog posts to Hacker News around 2016, but only ones I thought relevant to the HN community.
Until 2020, I would do this about once a week, and most submissions would fall off
/newest within an hour, never to be seen again. But a problem arose (well, 'problem' depends on your perspective 😉): over time, more of my posts started hitting HN's front page.
HN is an interesting community—unlike Reddit, on which most material considered 'self-promotion' is verboten (because so much is spammy resumé-boosting or corporate material), HN encourages genuine self-promotion (at least judging by what hits the front page).