To save on iPhone or iPad:press + hold on image, save. You can set separate lockscreen and home wallpapers under your phone settings. Or, option 2: click the download button below (you can also save & rename the image in your files app).
To save on computer:right click on image, save.
*weird tip:when you come across an image with the touchscreen-option to “save to photos” (a feature not always available, 100% of the time); this generally indicates free access to the image (for personal use).