This should solve your problem. Except there are quality issues or niche related E-A-T issues. But try resubmitting it in GSC first.I've had a glitch before that I'll index the site through GSC, and then a few days later the URL doesn't appear in the serps anymore. Usually all it takes is a resubmission in GSC and it pops right back in again.
How long ago did you submit the new articles to GSC? For a fresh page, it doesn't always happen right away.
Following on from that, if there's malware on the site as well, that would be a cause for removal. As would a manual action against the site.This should solve your problem. Except there are quality issues or niche related E-A-T issues. But try resubmitting it in GSC first.