Answer 1

https://code.sololearn.com/WImGt52slLPu/?ref=app

I made here a carousel, maybe have a look to understand.

Btw I created classes, added the elements.

Then I get an element and made something like this:
document.getElementById("text").innerHTML=`${agg[x].name}`;

And at the onclick of the button:
x += 1;

This will change to the next element :)

Hope this helps :)