@Gabi1214 SharePoint default People web part does not support carousel.
You may need to develop a custom web part for this using SPFx. Check if any similar sample available on SPFx web parts repository which will help you to get started with: sp-dev-fx-webparts
Please click Mark as Best Response & Like if my post helped you to solve your issue. This will help others to find the correct solution easily. It also closes the item. If the post was useful in other ways, please consider giving it Like.
