Facebook has introduced a new link history feature on Android and iOS. Using this feature, users can see a list of all the websites they have visited in the browser within the Facebook mobile app. So, every time you tap on a link within the app, it appears in the link history section. However, this is not exactly great for your social media privacy. So, if you want to turn it off, open the Facebook app and go to Menu (in the top right corner on Android and bottom left on iOS) -> Settings & privacy -> Settings -> Browser -> toggle off allow link history -> Don't allow.
Facebook recently added a new 'chirping' sound with the latest update which plays while scrolling through the newsfeed on the app. The sound is intended to provide additional audio cues while swiping. However, not all users enjoy it and some find it obnoxious. To disable the feature, open the Facebook app, go to Settings & Privacy, then Settings, then Media, and toggle the Sounds for Apps option off.