Removing titles and featured images from posts

Hello,

I am trying to remove the titles and featured images from the post, but want to keep for the thumbnails on the blog page.

I have tried to install 2 plug ins, but they don’t work. I am assuming it is because I am building the pages using the page builder.

So, I have looked on the forum, but I don’t have an option of changing the theme settings for a blog.

I have also tried downloading a custom css plugin and adding code that was on the forum.

But this doesn’t work either.

I’m guessing I am missing something simple as I am not a designed, coder etc.

Any help, put in very simple terms, would be great.

Thanks

David