The breeze moved slowly around my body
The car moved slowly along the winding country road.
Our childhood friendship was wonderful but the lemonade business went slowly.
The millionaire slowly lost all of his money as he spent it on goods.
Our civilization is corrupt and slowly crumbling away.
Herman easily lifted the barbell.He climbed the ladder slowly.
I slowly walked down the stairs into the dark and dingy room.
Slowly is not modified by any word in this sentence. But slowly modifies convinced. Slowly is an adverb of manner and it modifies the verb convinced. It tells us in what manner you were convinced.
My friendship with Mazie since childhood has been wonderful; when something is important, she's all business; when it's time for fun, she takes it slowly.
The old crucifer (= cross-bearer or carrier) was marching slowly towards the cathedral.
Drop the grudge and back away slowly. Your grudge is unworthy of further attention.
Submerge those dishes in the soapy water, please. I was watching the submarine slowly submerge.