Which is better? Buy Bulk Wordpress or Bulk Shell?

I read an article that suggests shells are used for SEO parasites, but I don't understand how to use them. I think I need a script to automatically create content. So how do I choose keywords? Should I just search for the main topic I want? For example, "slot gacor" and copy all the keywords, or should I take them from Google Trends?
If WordPress is linking many backlinks to my own site, which is better to use? Or are there any other suggestions?
and if there is someone here who has a script for parasite SEO or a script to create automatic backlinks from WordPress without having to manually log in to WordPress one by one and create content manually one by one using Chatgpt, you can contact me.

Parasite SEO works best when you start from search intent and topic gaps, then publish simple, relevant content manually at first to validate keywords, instead of relying on mass scripts or copied trends that usually burn domains fast.