But if the issue is with your Facebook app, then have to carefully follow this fixation steps to fix Facebook won’t load pictures.
Steps to Troubleshoot Facebook not loading Pictures
Close the Facebook App
Sometimes we forget to close the recently used apps, and then it results in Facebook slow loading pictures. The best method is to close all the recently used applications regularly and if possible then restart your device.
Restart your device
The above resolution was likely to troubleshoot small app-related issues. Still, Facebook is taking too long to load images, and then restart your device. Force rebooting the device will refresh the device that will gradually increase the speed of device and applications.
Network Connectivity
Switch the Wi-Fi network and use Facebook. If the Facebook is working slow maintain the proper internet Connectivity.