Hmm, quite difficult to take a screenshot, as I can't find another app on my device which wakes up other apps as I have already cut off all such apps.
Try the following steps:
1. Open an app of which you know that it wakes up FB.
2. Close this app or go back to your homescreen.
3. Open Greenify and go to the section, where all apps that are greenified are shown (not the section where you can add apps to be greenified!) -> should be start page by default.
4. Now you should see that the app you have opened is running, but also FB, which has been woken up by this app.
5. Long press on the FB entry.
6. Now the scissor symbol should appear in the action bar and you can prevent FB from being woken up.
I have tried this but the scissor does not appear and most of the apps iHave wake up by them self like whatsapp or facebookOr messenger what can ido to stop them