How to Rename the downloaded photos and download all the photos in one folder?

So, I have hundreds of keywords that my code will automatically download, however, I want all these photos to download in one folder instead of having a separate folder for each keyword. So, I'll download let's say 5 images then use it and I want to delete all the photos and then download the next keyword in the same folder and use them.

So, How to rename the downloaded photos? Download all the photos in one folder? Delete the downloaded photos after using them?