About 2-3 years ago I took down all my content, left only the forum, and 301 redirected the main page to a different domain and website.
Recently I started creating new content, so I removed the 301 redirect. I've added a few dozen high-quality articles with pictures and videos.
But all of these articles seem to rank poorly for exact-match article titles. Instead, many similar topics of my forum rank higher. When I search Google for my domain name without ".com", the first result is my youtube channel, the second result is my forum homepage. The content pages ARE indexed.
I've started placing links to the articles inside the forum threads, but so far nothing has changed.