In my mother tongue (with more than 100 millions of speakers) there's no mental health website at all.

There are tons of very specific topics that there's no content for (like: does Zoloft cause hairloss?). Even for relatively competitive topics, the quality of content available is very poor or at best, 2-3 high quality articles in Google's first page.

Since there are tens of millions of mental health searches per month in this language, I thought this is a great opportunity to provide high quality content but at the same time, I thought maybe previously launched websites have failed for some reason (maybe lifestyle websites rank better for these keywords? Or I'm overestimating size of search volume in mental health etc) and I can't see it now.

What do you think?