no, every sentence needs a subject and a verb. waved is a verb but there is no subject. the subject is who or what is doing the verb.
A comma should be placed after "joy" in the sentence: Yelling for joy, Sue waved at Errol.
To make a complete sentence, the sentence must have a subject and a predicate. aka a noun and a verb I love pigs
She felt her heart flutter when he waved.
tiny
The passerby did not stop to speak with him. She waved to the passerby.
tiny
A sentence could be: I will give you money when pigs fly
For the sentence:"When Ben met his brother at the airport, he waved and smiled."Answer It is not clear whether the antecedent of he is Ben or his brother.(Apex)
The soldier waved his gun menacingly and advanced towards the house.
The cilia of the small intestine waved back and forth, trying to get nutrients.
The politician waved his hand dismissively as the press fired questions at him.
She dramatically waved her hands around, trying to make me understand.