Go into MyFiles and look at the areas there for your picture.
However when I download a photo from Google by long pressing on the photo and choose Save Image by this is stored in my Samsung Gallery under a file called downloads.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
@Torgren: Any downloads can be found in My Files. Swipe up from your Home Screen > Samsung (folder) > My Files > Downloads.