The phrase "persistently attempt" is correct and usable in written English.
You can use it to describe someone or something that is making consistent attempts to accomplish something despite any difficulties. For example, "Despite multiple setbacks, they have persistently attempted to reach their goal."
Akabusi also persistently attempted to persuade the former international junior athlete to return to the track.
Throughout the year China persistently attempted to persuade North Korea to return to six-party talks on nuclear disarmament.
Despite Newcastle's fall into the Championship Shelvey then began this season warming the bench and, when liberated from it, persistently attempting too many "Hollywood passes" and over-ambitious long-range shots.
One side of the screen shows Ms. Rosario as she politely but persistently attempts to present her case, while on the other side, in tape apparently provided by the mayor's office, Mr. Giuliani talks right over her, insisting on two points that the film says were not true: that gunfire was exchanged and that Anthony had a criminal record.
"Over the past seven months, the special committee persistently attempted to work constructively with Roche and we were consistent in our stated willingness to negotiate toward a price that recognizes the full value of Genentech," the committee said in its letter to shareholders.
This is the reason why the majority of scientists and researchers are persistently attempting to take a shot at novel elements of nanotechnology.
"Cal Fire persistently attempted to cover up," Nichols said.
Misuzu persistently attempts to play with him, while Yukito tries to refuse her efforts.
As they continue their "mating march", the male licks the female's rump and persistently attempts mounting her.
On the flight to the national spelling bee, Guy meets Chaitanya Chopra, a 10-year-old entrant in the bee who persistently attempts to befriend Guy.
