It is highly unlikely that the problems you're experiencing are the result of "hacking".
Focus is a built in part of iOS. By default, there are a number of preset ones. I don't remember, other than Driving an Do Not Disturb which ones are turned on by default. If you restored your phone to a backup, any that were set would be returned to the phone. That's expected behavior.
Go to Settings>Focus and tap on each on and swipe to the bottom of the screen. Tap "Delete Focus". The only one that can't be deleted is Do Not Disturb.
One thing worth considering. Do you have a work email set up on your phone? If so, it may include a profile that alters your ability to make certain changes in Settings. Delete the email and see what happens. You can always add it back.