This article explains how to view and manage your Off-Facebook activity in both a web browser and the mobile app. If you don't like the idea of apps and sites sharing your information, you can limit what data is shared with the platform in your Facebook account settings.
CRAZY Facebook Settings – Turn Off INSTANTLY!!! – Disable Facebook Activity
The following instructions apply to both Facebook.com and the Facebook mobile app, but the screenshots only apply to Facebook.com.
On Facebook.com, select the down arrow in the upper right corner, then select Settings from the drop-down menu.
In the app, select the menu icon in the bottom (iOS) or top (Android) menu and scroll down in the next tab to select Settings & Privacy > Settings.