I appreciate it's frustrating when something useful seems to disappear.
Have you gone into your edge bars settings to check if the panel has been unticked or maybe removed from available choices.
Slide your edge bar open and tap on the Cog Icon.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "