It may be helpful for you to consider the highest karma-earners on the site [1], and how they got there.
None of them got there by being the first to get breaking stories onto the site. They got there by regularly posting interesting comments and articles, consistently over several years.
Though if you look at their submission histories, plenty of what they've posted has received few/no upvotes. Some users will even post the same article every few months for a year or more, before it ever gets voted onto the front page.
Consistent contribution over the long term is what's key.
There are plenty of HN contributors who aren't well known at all for posting comments, but who have huge karma counts just for consistently posting interesting articles, and much of it is years-old, or about non-current topics like history, philosophy, literature, architecture etc.
Someone like that won't be bothered if other people sometimes get the karma for a story that they had submitted earlier. They will just keep posting several interesting articles every week or even every day, knowing that overall their contribution is valuable and that karma allocation will balance out fairly over the long term.
[1] https://news.ycombinator.com/leaders