Question

Is we applauded everyone who voted an adverbial phrase?

Answer 1

This is wrong because an adverbial phrase  the term for two or more words which play the role  of an adverb.

this does not include your sentence, here is an example of what i am talking about.

I will sit quietly.(normal adverb)I will sit in silence.(adverbial phrase)I will sit like a monk meditates.
(adverbial clause)

hope this helps !