Pictures folder not on iCloud

I've searched the forum and found this question asked before but the responses seemed to miss the point of the question. They all related to the "Photos" app being stored on iCloud.

My question is, what about the "Pictures" folder (not the photos app)? I download a lot of pictures and other illustrations from the internet and want these also stored on iCloud as well. None of the answers I've read speak directly to this issue. How do I automatically store items in my "pictures" folder to iCloud (not referring here to what is in my"photos" library in the photos app!).