SEO stands for Search Engine Optimization.
It's something interesting if you love learning new things on the internet, but it's time consuming, since there's a lot of things you need to consider in order to rank a -keyword-, either short or long tailed one.
Will you get your site on first page and 1st spot for "free bitcoin"? Highly doubt it.
Can you rank your site for "Where to get free bitcoin?" on first page? Highly possible.
There's not much competition for that keyword and not many people consider it as a "useful" keyword
SEO is
patience and
getting crumbs from all over the internet. That's only when you'll succeed to rank sites on bulls eye.
Google: "Bitcoin games".
It took me near 8 months to rank my site on the top. Which means, this isn't something which will happen overnight.
SEO that "works", is expensive, so I'd advise you not to give up, no matter what.
Good luck!
or you can hire a seoer 
