Finding images online can be tiresome so here is a curated list of websites and other sources that you can use to get free photos. (continuously updated).
- LibreStock: Search engine for free images.
- Pixabay: Free images and videos you can use anywhere.
- Unspalsh: Free high-resolution photos.
- Pexels: Best free stock photos in one place
Why not just get from Google Images? Google Images are retrieved from a wide range of sites and are normally of very low quality. You would also need to attribute the image to the original site or artist which is also hard if the image has been shared a lot of times.