But really when it comes down to it, theres a reason why SEM (SEO + PPC) and social media is so heavily used... it works.
If you don't know what you're doing then it doesn't work.
I just started a few sites
It sounds like this is your first problem. Why not start with just one site?
But I don't hace any earnings right now.
Your second problem. Get money.
There is any method to get traffic without SEO/social media?
After you get focused and get money. It will become more clear.
Either a) learn how to do it
b) pay someone to do it.
Traffic is all over the place.