In addition to the screensavers that we found natively in macOS, you can go to the internet to download others. The option that refers to active corners is one that allows you to perform different actions when you move the pointer through one of the corners. You will also have the possibility to choose, or not, the clock to appear when activated. It should be noted that there are more options in this window, such as choosing how long the idle computer must be before the screensaver starts. If you find it indifferent that screensaver choose or do not decide on any, you can configure it to appear randomly.
You also have the always interesting option of displaying personalized text.
The options available are varied and range from the classic visual effects with figures to different carousels in which your photos will be displayed with different effects. It is on the right side where you can see a small preview, which you can see in full screen by clicking on it. In the left part of the window, you will see that there are different screensaver options that you can choose from.