Cache files are often stored by apps based on past activity logs. The more you use an app, the more cache it accumulates. The same may be said for your Facebook app. In fact, Facebook is likely your iPhone's most utilized app. Cache files, on the other hand, can crash or get corrupted. And if this happens, the application's overall operation would most certainly be harmed. This is when your Facebook app begins to act erratically. Clearing the Facebook app cache might assist to avoid this possibility. On your iPhone 8, here's how to erase the cache on Facebook:

1. On your iPhone, open the Facebook app.
2. Tap the More button at the bottom of the screen as long as the app is active.
3. Go to the Settings tab.
4. Then choose Account settings from the drop-down list.
5. Tap Browser to open the Browser Settings page.
6. Tap the option to Clear Data.
7. check if this solution work or not