Issue with posts and other content types

Hi, I don't know why but when opening any contnet type (service, featured content etc.) the image post image is not shown anymore on the top. Furthermore, now the sidebar wich chose other blog posts is also shown in the other content types (services, features content) but before it wasn't and I'd like set up up again so that these sidebar is only shown on my page with the blog posts. Can you please give me what to do? My page is currently hidden because I am doing this and other changes, so I can't share a link.