"Handedness" Natural Recordings by Native Speakers
Handedness refers to the habitual preference of an individual to use one hand over the other for performing various physical actions, such as writing, holding objects, and performing tasks.
Handcuffed refers to being physically restrained or confined by being held in irons or secured with chains, typically on the wrists, by a law enforcement or correctional officer.
I apologize, but there is no word "handedly." It's possible that you meant "handily," which is an adjective that means "with ease" or "efficiently." For example: "She handled the task handily and finished it quickly."
George Frideric Handel was a German-born Baroque composer who was active in London in the 18th century. He is famous for his operas, oratorios, and orchestral music, particularly his "Messiah" oratorio.