help with slider

Hello I am using this theme >> https://themeisle.com/demo/?theme=ShopIsle

this theme has slider for pro version which i can not buy it so i wanted to add a new slider for my front page from the below theme

https://demo.themegrill.com/foodhunt/

Note: I am using About page as my current front page in the website. And I don’t know where i can find my slider codes and where to enter them i am just a newbie learning while i do website.