The phrase "a man decided" is correct and usable in written English.
It can be used when narrating a story or describing a situation where a male individual makes a choice or decision.
Example: "After much contemplation, a man decided to change his career path and pursue his passion for art."
Alternatives: "an individual chose" or "a person resolved".
You remind me of the joke about dysfunctional New York in the 1960s when, supposedly, a man decided the best way to get rid of his garbage was to gift-wrap it and leave it on the subway.
A man decided it was time for a change when he looked back at a video of his proposal to his girlfriend and felt disappointed with what he saw.
John Sullivan (NYT) GLENS FALLS: MAN GIVES $1 MILLION -- After three visits to the Crandall Public Library, a man decided to donate $1 million to the library's $10 million expansion.
While enjoying a solitary bask in the sun on a locals-only beach near Corfu Town, a man decided to sit three feet away from me on the empty beach.
Professional Jockeys Associationn chief executive Paul Struthers said: "I wasn't invited to be present for the initial hearing, but I know that certain conversations took place between jockeys and stipes [stipendiary stewards ] afterwards, and the jockeys - to a man - decided that they would not take part when the hearing was due to re-commence.
Long story short, a man decided to pop the question with a big pile of crap.
So how does a man decide whether to get P.S.A. screening or not?
A man decides to kill his brother‐in‐law, fakes a suicide and goes to work.
But if a man decides to make those payments over ten years, investing $10,000 a year, his income stream might be slightly less, perhaps closer to $880 a month.
A man decides to plant a tree in his compound, on a piece of land that his parents have owned for decades.
Once a man decides what to do about prostate cancer, there is no reason to wait, but the reassuring research says that men can take the time they need to make their decisions.
