Post types showing tables...Can I do that?

Hi everyone! I have the design of my web and there's a page that it should look like this. I don't know if this is the good way to do it but I'm trying to make custom types that show like "post", and every post should be a table. I tried to write it by myself, with plugins... but nothin works. I don't know why it doesn't show. I made my theme from 0 myself and I think I´'m writting something wrong in my single-veranstaltungen.php page. Any help would be really appreciate. This is driving me crazy! I understand what post types do but I think I'm not writting the code properly to make it work. Thanks!!