Can't copy pictures from google?

I have a technical problem. My MacBookAir no longer copies pictures from Google, so if I search something and then want to insert a picture in a report, the copy function is no longer possible. Normally I would copy with cmd + c or "copy" over editing. When that did not work anymore, I used a mouse to help me, but neither right nor left double mouse click opens the usual selection box.

Of course, I have already googled my problem and already shut down my laptop and re-uploaded. However, nothing has changed and I hope for help now.

Simply drag the images from the web page onto the desktop or into a folder. Then you draw this picture in your text. This is actually Mac-like everything else is Windows.

Many thanks for the proposed solution, which I will try. However, I would be interested, why the procedure described by me is no longer possible.