I think it's pretty common to blame your parents for something or other, no matter how you end up no?
Of course there will be gaps where they failed you, they're human, expecting YOUR parents to be perfect is just unrealistic expectations. Seeing that failure as something more than just a part of life though is unrealistic.
Yes, your parents failed you, in many ways, because they're human, and it would be impossible to not screw something up unless they're omniscient.
Or was the mistake saying you held a certification that you thought wasn't important to most people?