Sometimes a scene needs a little extra
If you are looking for reference photos which you are allowed to use without infringing copyrights here are some links.
THE STOCKS gives you a complete list of sites but also includes paid services
Vector Graphics gives you what it says. Much of it is free
Unsplash has thousands of free photos
PEXELS also has thousands of free photos a few will be identical with the ones on Unsplash
PIXABAY again has thousands of free photos