Since a lot of people are using Smartphones on the daily basis, I have performed the steps on my Android Phone. So, follow the same steps to turn off, Off Facebook activity.
Steps to Stop Facebook from tracking your Data and Activity
You can see all the activities that you have done using your cellphone. Even if you have used Paypal, logged inside your bank app, browser, everything is there. So, First All you have to do is clear that History. Now that the off-Facebook activity has been cleaned, we need to disconnect Facebook tracking us outside Facebook. To stop Facebook from tracking us, go back.
Conclusion:
This is How you can Stop Facebook from tracking your Data and Activity outside Facebook. Still, Facebook will show ads to you, and if I suggest, remove or Disable Google Chrome and start using the Brave browser. Because it will stop trackers and cookies from tracking you.