'he fumbled through' is a correct and usable phrase in written English.
It is typically used to describe someone who is struggling or having difficulty with something, usually physically or mentally. It implies a sense of clumsiness or lack of skill. Example: He fumbled through the instructions, trying to figure out how to assemble the furniture. In this example, the person is struggling to understand and follow the instructions, showing a lack of skill or dexterity.
He fumbled through the glove compartment.
As his wife slept, he fumbled through the darkness for his laptop.
He fumbled through the game on Tuesday, recording a throwing error, getting picked off second base and miscommunicating with Murphy on a ground ball up the middle.
When Putin went to Amsterdam in April, the city flew the rainbow flag, and he was confronted with questions about the propaganda law; he fumbled through his answers.
But Kickstarter proved to be a bigger logistical beast than Jenssen expected, and he fumbled through a series of unforeseen challenges, including manually tracking down mailing information and shipping hundreds of records without a team of helpers.
He was unapologetic and rough from the moment he got into office in 1978 all the way through his final mistake when he fumbled through the Rodney King beating aftermath in 1992, one of the worst civil disturbances in our city's history that resulted in 52 Angelenos dead and billions in property damages.
Mr. C is so darkly powerful and confident, as he looks into his prison cell mirror and sees his face warping into Bob's (while saying, "You're still with me. That's good"). And Cooper looks so lost and stricken, as he fumbles through his first day at Dougie's office.
BUT will the audience get it?" a forlorn third-rate actor named Frederick Fellowes asks as he fumbles through the last-ditch rehearsal of a play-within-a-play, more precisely, a dumb play ("Nothing On") within a brilliant play ("Noises Off") at the Paper Mill Playhouse here.
Then she fumbled through a series of videotaped apologies that were widely criticized as vague and self-serving.
Trying to improvise in order to trump Kwan's brilliance, she fumbled through her program and finished second.
Instead, they fumbled through a winless preseason schedule before dropping games to the Trail Blazers and Mavericks to open the 2012-2013 campaign.
