Hi Ali,
There’s no slider feature in GeneratePress or GenerateBlocks. You’ll need a third-party plugin or custom code for such a feature.
Our usual recommendation would be Smart Slider 3.
See: https://smartslider3.com/blog/generatepress-slider/
If you’d want something more lightweight, you might want to test and check out some other plugin: https://wordpress.org/plugins/search/carousel/
Here’s an article I found as well which may also help in choosing a plugin: https://blog.hubspot.com/website/best-wordpress-slider-plugins