"Manchester United won the league for the last time in 2013, 11 years ago," Ten Hag told Voetbal International. "But still they expect us to win every game while competing at the top.
"This club is not ready for that.
"We were supposed to start building something and we made the first steps last year, but then you find out how big this club is and that nobody is ever satisfied.
"Within the club people were satisfied, but outside the club there was noise by saying I won only the Carabao Cup, lost the FA Cup Final and came third."
He continued: "The pundits in England want to score, they want to show they are worth the money, and for that Manchester United is an easy prey.
"It's the biggest club in England and possibly in the world. The club is either loved or hated, there is no in-between.
"So when things go bad, they all start talking and talking with very big words. All this negativity from these so called experts who don't have the capability to analyse something with facts, but who prefer to attack people to make themselves look better.
"And these same people were the ones who gave me a pat on the back last year. Last year I was able to walk on water, this year I am the worst manager in the Premier League."