How to add more articles with thumbnail in column on pages

I want to put on the other pages more aticles in column with thumbnail for exemple like in the first page.
I tried to make that from aparence-menus, i created a new menu, i select it as primary menu navigation but but my pages menu didnt change i tried to do that on other template and is working on youfitness template i cant modify the menu from there

This is my site : https://www.fitnessinfo.ro when i click on the page Articole i want the articles to look like in this picture , now i can put only one article https://i51.tinypic.com/fodsaw.jpg