Photo references are very helpful when you’re just starting out. However, there are a few things to keep in mind so that you don’t get into trouble. https://www.arttutor.com/blog/201611/where-find-legally-free-reference-photos-your-art-part-1-2
Personally, what I do is look for CC0 images of Sculptures to practice observational drawing method. And for painting, I would search for old paintings done by old masters of the past. Last night before bed I fired up Krita and did four iterations (four different attempts at the same photo) of a Sculpture done by Michelangelo. I haven’t learned proper methods yet, so this is just something I did on the fly.