Does Sync delete files on destination folder

Hi,
New to this so i'm sorry for the dumb question.
I'm copying my Google Drive photos to my external hard drive whenever it is plugged in. Periodically I delete my photos from google drive to free up space on my cloud. My concern is Hazel will delete all the files in the destination folder that are not also on Google Drive. Just looking for confirmation that this is not the case.
Thanks!
New to this so i'm sorry for the dumb question.
I'm copying my Google Drive photos to my external hard drive whenever it is plugged in. Periodically I delete my photos from google drive to free up space on my cloud. My concern is Hazel will delete all the files in the destination folder that are not also on Google Drive. Just looking for confirmation that this is not the case.
Thanks!