Website Not getting Best from SEO Plugin

I have started new porn comics website FreePornComix[dot]com around 2 month its a wordpress based cms. I m using plugin for seo ALL IN ONE SEO but its not doing well in google search

1. should i use yoast and submit sitemap again in webmasters and re-index my site
2. where should i can find ******** good ranking link free I cant spend money on this website may b later
3. porn comics have very less text and i m also not good in writing.

build some backlinks and use social media to get free traffic- a plugin cannot rank you in the search.

At the dawn of the Internet, these sitemaps were really important as they were the only way to navigate through a website.
Times have changed.As for now, HTML sitemaps are hardly ever used in navigation. With the advent of advanced mega menus, smart onsite search and well thought-out internal linking, they have almost lost their original purpose.Google crawler will be able to index your website's pages but it won't rank you site higher in Google at 2018 I guess.

Better you purchase few links from Adult PBN networks.It's not that expensive