Happy to see you on our forum! Welcome, @user25537 
Unfortunately, the Carousel layout isn’t available in our Blog app, but we have a Wishlist request for this. Feel free to upvote it 
- Carousel Layout.
However, we have a Slider app, that might be a nice option for this case, and I see that you’ve started using it.
If you have any questions about Slider or other Elfsight apps, don’t hesitate to as them here. We’ll be happy to advise 