The phrase "at nonetheless" is not correct and usable in written English.
The correct expression would typically be "nonetheless" on its own or used in a different context.
Example: "The project faced many challenges; nonetheless, we completed it on time."
Alternatives: "however" or "nevertheless".
We saw something similar earlier this year: when the Labour party denied McDonald's a stall at its conference over their violations of labour rights, Wes Streeting MP rushed to the defence of the multi-billion pound company, because while it "may not be the trendy falafel bar that some people in politics like to hang out at", nonetheless, "it's enjoyed by families across the country".
(He was yelled at nonetheless by some viewers when the show opened. "To them, I suppose I was trying to put a fifth leg on a four-legged cat," he recalled in an interview).
Apparently, what Dorothy's not great at nonetheless possesses great creativity.
"I am really happy with where my batting is at," Flintoff nonetheless insisted.
Pakistani officials were at first nonetheless suspicious of the new government's foreign-policy team.
The youngest winner, for only her second novel, Catton at 28 nonetheless returns the prize to something like home territory.
Unlike Gibson, these independent artisans — also called luthiers — have been charged with no crime, but their livelihoods and life savings are at risk nonetheless.
As authorities started to investigate rate manipulation, traders at R.B.S. nonetheless continued to try to influence the benchmark, albeit more covertly.
They're really small wolves, and the door is 3 million iPads thick, but they are scratching at it nonetheless.
The details of their relationship invite many hard questions, but we should briefly look at this nonetheless.
Then I sold them both to a friend, at mate's rates but nonetheless at a profit – and got better seats as review tickets for free.
