thumnail size

I just tried to get a look at your site. Where is the widget there?

I used the widget for the “recent posts page”. that is the link:
https://www.singlca.si/novo-dodani-traili/

In the sidebar works nice, but i/d like to get it working on a normal page as well if its possible?

Again I could not find the widget on that page. Neither in the content nor in the sidebar.

This plugin works in widget areas only. If you want to use it in pages via shortcode try my plugin Ultimate Post List.

If you want to display more post infos, want to use layout and pagination options take a look at Ultimate Post List Pro.