Need some advice - Niche Porn sites

Hi guys, I'm going to tell you my story:
I have 2 niche porn sites, one is a one year old cam site and the other one is a tube site with 6 months old. My problem is that I don't have enough traffic. I don't get more than 120 visitors a day on each site and I honestly don't know what to do anymore. The things I've done so far to get traffic are the following:

• I have a twitter account with almost 5000 followers where I upload videos almost daily and put short links to my sites,
• I have uploaded videos to Xhamster and Pornhub(some with more than 500,000 views) with watermarked link to my tube site.
• I paid for 2 good link building plans promoted here, one for each of the sites about 3 months ago, and although I have some better positioned keywords I still can't increase my traffic significantly.

What else can I do? Is there anyone who can advise me on how to get thousands of daily visitors in my niche porn sites?

Buying traffic on sites like webtrafficgeeks really works?

I'll wait for your feedback guys

Thanks

bro, what is the progress with the sites at the moment?

You can hire SEO specialist. update your website on page SEO and make high authority backlinks for website ranking.