Perfect example of what happens when folks who have zero clue about football or what it takes to be successful hire a football coach.
The offensive scheme that he tried to install, a version of the wing-T is awful. Then he'll throw 4 wide receivers on the field if there is no threat you can complete a pass. Failing to make your schemes fit your players is on the coach, not being able to get 11 men on the field is on the coach & staff.
Bottom line is when you hire an unqualified candidate this is what happens. No different with any other job out there.