Like Lilly Anne, I do scrap some photos more than once, for different topics or stories. Especially when I am doing PL, I'll use a photo there with a snippet of journaling and I'll scrap it again with more detail or a different angle to the story in a regular LO.
I store all the LO's I make on my hard drive in date order, like 2020-09-01Jamie. So it's really easy for me to go back and look at my LO's to see if I've scrapped a photo before. I'm just in the habit of looking at previous LO's before I even start a page. I'm more worried about using the same journaling twice than photos actually, that's why I started doing that. I found myself telling the same story more than once a couple of times, which was so annoying!
I actually do like doing kind of "update" LO's that use photos I've already scrapped, like on anniversaries I'll use a wedding photo, or if something significant happened and I want to revisit old photos. I'm going to make a LO about the fire at Notre Dame and talk about how glad we are that we got to visit before that happened, and I'll probably use a mix of photos for that. I like scrapping the same photo from different perspectives.