The phrase "and failed even" is correct and usable in written English.
It can be used to emphasize a failure that occurred despite expectations or efforts, often in a context where something was anticipated to succeed.
Example: "He tried multiple strategies to win the game, but he practiced for weeks and failed even to score a single point."
Alternatives: "and even failed" or "and still failed".
But no, they couldn't even manage that and failed even to be the best at being the worst.
His letter offered some criticisms, but also denigrated the protest movement that had roiled the country since March, and failed even to acknowledge the brutal crackdown that had left hundreds of Syrians dead.
The Clintons had little experience with caucuses in the 1990s and failed even to compete in most states holding them this year, allowing Mr. Obama to rack up a mass of uncontested delegates.
"It is shameful that Ban Ki-moon went to Burma and failed even to utter her name," said Mark Farmaner, director of Burma Campaign UK. "He is playing into the regime's hands.
The United States went to war in Cambodia in an effort to deny the Vietcong and North Vietnamese sanctuaries there and failed, even though in that case the geographical area involved was small.
Congress passed the Defense of Marriage Act in 1996, and in 2010 a federal judge in Massachusetts struck down the law as unconstitutional, declaring that restrictions on same-sex marriage had no rational basis and failed even the most lenient test for constitutional scrutiny.
Continuing a depressing trend, the 300-page manual is supplied only on CD and fails even to mention the included Web browser or game software.
It was so good, in fact, that the Golden Globes and Oscars failed even to nominate a number of the best movies of the year.
And then he failed even worse.
And he said failed, even though Google is still in China.
I have received no reply and they have failed even to acknowledge my letters.
