Long-press on the center of the image until a pop-up menu appears.
Are you downloading your or images from someone else's profile ? Do you need to download videos along with the images?
What (Windows, Mac, iOS, Android) are you primarily using?
Select Save to phone . The image will be stored in your device's internal storage under a dedicated "Facebook" album folder. Method 3: How to Download Entire Facebook Photo Albums
Tap the three vertical dots in the top right corner of the screen.