I'll take 2-3 blunders per season. Imagine if we had DDG in goal, who has a blunder like every week + the Bernabeu pressure. He'd last 2 months before he'd want out and back to the Europa League mediocrity.
DDG has so few blunders i am not sure what you are even referring to.
I do wonder if he would have a "blunder every week" if he played in a league with ~2.5 competitive games per season. OAFK probably wouldn't manage a blunder a week for Real