The best solution depends on your goal:
If you only want to add images as thumbnails to text on a webpage, it's best to do this via 'Media' and then add the media folder to the webpage. All images in this media folder will be displayed as thumbnails and can be enlarged by clicking on the thumbnail.
If you want to publish photo albums, for example, from events, you can do so using the new "Photo Albums" option. Here, photos can be organized into folders. To display the photo albums on the website, you need to create a new webpage and select the "Photo Albums" module. This page clearly displays all photo albums. Logged-in members can also leave comments, tag other members, and like photos within the photo albums. You cannot add a separate photo album to a webpage. Read more about photo albums here and watch the instructional videos.