It all depends... If there are 8,000 monthly searches and 100,000 websites for that niche then it will be very hard. It takes more information. Also what if all the 100,000 sites have been professionally SEO'd.
We are going to need more statistical information about the niche. Also, I read your journey. By reading it I was able to tell that you work hard towards your goals, you're just not working smart. I'm not sure what niche your in but you're spending all this money on views and everything but your making $0-$1 everyday. This is because not enough people are interested in what your trying to promote.